Rexroth: Screw Assemblies. Catalog (R999001185/2020-03) - page 11
150
Screw Assemblies | Ball Screw Assemblies BASA
Lubrication
Grease lubrication With a grease gun or a progressive lubrication system in the case of Ball Screw Assemblies > Ø 12 mm
Lubricating grease
We recommend using Dynalub 510 with
Under conventional environmental conditions,
You can download product and safety
the following properties:
this ground-fiber, homogeneous grease is ideally
data sheets from our website at:
--
NLGI grade 2 lithium-based high-
suited for the lubrication of linear elements:
performance grease as per DIN 51818
--
For loads of up to 50% C
Please also observe the information on
(KP2K-20 according to DIN 51825)
-–
For short-stroke applications ≥ 1 mm
page 162.
--
Good water resistance
-–
For the permissible speed range of Ball Screw
Material numbers for Dynalub 510:
-–
Corrosion protection
Assemblies
--
R3416 037 00 (cartridge 400 g)
-–
Temperature range: -20 to +80 °C
-–
R3416 035 0 0 (hobbock 25 kg)
Initial lubrication of the Ball Screw
Assemblies (basic lubrication)
Fully assembled BASAs with a diameter
When individual parts are supplied (nut on
The positioning and traversing instruc-
greater than 12 mm are prelubricated at
mounting arbor) or with versions without basic
tions (see figure below) must be
the factory with Dynalub 510.
lubrication at the factory, you must apply double
complied with.
the quantity of lubricant stated in the “Lubricant
When using progressive lubrication
quantities - Relubrication” table via the nut’s lube
systems, ensure that all the lines and
hole before commissioning.
distributors (including the connection
to the BASA nut unit) are filled before
carrying out basic lubrication or
relubrication.
Positioning and traversing instructions
Horizontal mounting position
Vertical mounting position
1
2
1
2
3
3
2
2
1
1
1
Position of the nut during lubrication
2
Flange with lube port (if installed horizontally, the port should be at the top if possible)
3
Direction of travel after lubrication. Traversing path should be at least 3x the nut length.
Relubricating the Ball Screw Assemblies
If the relubrication interval according to the diagram on page 151 has been reached, relubricate the amount stated in Table “Amount of
lubricant for relubrication” on page 152.
In this connection, you must comply with the nut position and traversing path shown in the “Positioning and traversing instructions” illustration.
151
Lubrication
Load-dependent re-greasing intervals
in the case of grease lubrication with a
s
(M revolutions)
grease gun or a progressive lubrication
100
system in the case of Ball Screw Assem-
d0 ≤ Ø 40 mm
blies > Ø 12 mm (“dry axes”)
50
This applies to the following conditions:
--
Dynalub 510 grease or, alternatively,
Castrol Longtime PD 2,
Elkalub GLS 135/N2 grease
d0 > Ø 40 mm
--
No exposure to media
10
-–
Standard seals
-–
Driven screws
-–
Not mission critical operation
-–
Ambient temperature: T = 20 to 30 °C
s
= relubrication interval
F
m/C
in millions of revolutions (106 revolutions)
1
C = dynamic load rating
(N)
0
0,1
0,2
0,3
0,4
Fm = average load
(N)
d0 = nominal diameter
(mm)
Conversion of the relubrication interval s
s in millions (of revs) · lead P (mm)
from millions of revolutions to kilometers:
s in kilometers =
106
Example:
50 · 106 (revs) · 16 (mm)
s in kilometers =
= 8,00 km
106
Notes
The load ratio Fm/C is the quotient of the average load Fm and the dynamic load rating C (see “Calculation”).
If you are using a progressive lubrication system, please take into account the minimum metering quantity of 0.03 cm3.
In this connection, please note the general lubrication information on page 157.
152
Screw Assemblies | Ball Screw Assemblies BASA
Lubrication
Grease lubrication With a grease gun or a progressive lubrication system in the case of Ball Screw Assemblies > Ø 12 mm
Amount of lubricant for relubrication
Size
Amount of lubricant for relubrication (cm3)
FED-E-B / FEM-E-B / FEM-E-S / FEP-E-S
ZEV-E-S
FDM-E-B / FDM-E-S
d0 x P x Dw - i
SEM-E-C / SEM-E-S / ZEM-E-S / ZEM-E-K / ZEM-E-A
16x5Rx3 - 3
-
0.9
-
16x5R/Lx3 - 4
0.70
-
1.75
16x10Rx3 - 3
0.85
1.10
-
16x16Rx3 - 2
0.95
-
-
16x16Rx3 - 3
1.20
-
-
16x16Rx3 - 6
1.35
-
-
20x5R/Lx3 - 4
1.00
1.30
2.95
20x5Rx3 - 5
1.15
-
-
20x10Rx3 - 4
1.50
-
-
20x20Rx3.5 - 2
1.85
-
-
20x20Rx3.5 - 3
2.40
-
-
20x20Rx3.5 - 6
2.50
-
-
20x40Rx3.5 - 4
1.75
-
-
25x5R/Lx3 - 4
1.50
-
3.50
25x5Rx3 - 7
-
1.95
-
25x10Rx3 - 4
1.85
-
4.15
25x10Rx3 - 5
-
2.05
-
25x25Rx3.5 - 2
2.65
-
-
25x25Rx3.5 - 3
3.45
-
-
25x25Rx3.5 - 4.8
1.65
-
-
25x25Rx3.5 - 6
3.90
-
-
32x5Lx3.5 - 4
2.50
-
-
32x5Rx3.5 - 4
2.15
-
4.90
32x5Rx3.5 - 5
-
2.40
-
32x10Rx3.969 - 5
3.05
3.25
6.65
32x20Rx3.969 - 2
2.80
-
-
32x20Rx3.969 - 3
3.55
-
-
32x20Rx3.969 - 6
3.70
-
-
32x32Rx3.969 - 2
4.05
-
-
32x32Rx3.969 - 3
5.45
-
-
32x32Rx3.969 - 4.8
2.85
-
-
32x32Rx3.969 - 6
6.20
-
-
32x64Rx3.969 - 4
3.35
-
-
40x5Lx3.5 - 5
3.35
-
-
40x5Rx3.5 - 5
2.95
-
7.60
40x10Lx6 - 4
6.50
-
-
40x10Rx6 - 4
6.65
-
16.75
40x10Rx6 - 5
7.70
-
-
40x10Rx6 - 6
8.15
-
19.70
40x12Rx6 - 4
6.75
-
-
40x16Rx6 - 4
9.15
-
21.35
40x20Rx6 - 3
8.70
-
20.55
40x20Rx6 - 8
9.35
-
-
40x25Rx6 - 4
10.84
-
-
40x25Rx6 - 8
10.99
-
40x30Rx6 - 4
11.95
-
-
40x30Rx6 - 8
12.29
-
40x40Rx6 - 2
10.40
-
-
40x40Rx6 - 3
14.30
-
-
153
Lubrication
Size
Amount of lubricant for relubrication (cm3)
FED-E-B / FEM-E-B / FEM-E-S / FEP-E-S
ZEV-E-S
FDM-E-B / FDM-E-S
d0 x P x Dw - i
SEM-E-C / SEM-E-S / ZEM-E-S / ZEM-E-K / ZEM-E-A
40x40Rx6 - 6
15.00
-
-
50x5Rx3.5 - 5
4.65
-
11.70
50x10Rx6 - 4
-
-
21.90
50x10Rx6 - 6
10.75
-
25.55
50x12Rx6 - 6
11.60
-
-
50x16Rx6 - 6
16.15
-
-
50x20Rx6.5 - 3
12.65
-
-
50x20Rx6.5 - 5
17.35
-
34.75
50x20Rx6.5 - 8
9.90
-
-
50x25Rx6.5 - 4
14.20
-
-
50x25Rx6.5 - 6
10.45
-
-
50x30Rx6.5 - 4
14.73
-
-
50x30Rx6.5 - 8
14.81
-
50x40Rx6.5 - 2
15.45
-
-
50x40Rx6.5 - 3
20.65
-
-
50x40Rx6.5 - 6
19.15
-
-
63x10Rx6 - 4
-
-
25.55
63x10Rx6 - 6
12.15
-
30.00
63x20Rx6.5 - 3
15.45
-
-
63x20Rx6.5 - 5
21.35
-
43.75
63x20Rx6.5 - 8
14.35
-
-
63x40Rx6.5 - 2
18.90
-
-
63x40Rx6.5 - 3
25.40
-
-
63x40Rx6.5 - 6
26.95
-
-
80x10Rx6.5 - 6
19.10
-
66.00
80x20Rx12.7 - 6
65.50
-
132.75
Note: The sizes that are listed in the table are not available for all nut types.
You can find the respective size range in the chapter entitled “Nuts” from page 24 onward.
Relubrication for Driven Nut FAR
For NLGI grade 2 greases
The driven nut can be supplied with grease via the outer race of the angular-contact thrust
(using grease gun)
ball bearing. It must simply be noted that the nut must be stationary during the lubricating
procedure. The nut can however be in any position on the screw.
This provides a very simple solution to the problem of a rotating lube port on the nut unit itself.
Two lube ports (M6) with radial or axial access are provided. On delivery, both are sealed
by setscrews. The lube port can be opened by removing the set screw.
FAR size
BASA size
Relubrication quantity (cm3)
For FAR with or without timing belt side
d0 x P x Dw - i
drive the following applies:
32
32 x 10R x 3.969 - 5
3.5
--
Can be relubricated with NLGI Class 2
32 x 20R x 3.969 - 3
4.0
grease when stationary via the stationary
32 x 32R x 3.969 - 3
6.0
lube port of the bearing outer race
40
40 x 10R x 6 - 5
8.4
optional
40 x 20R x 6 - 3
9.8
--
screw liquid-cooled; on request
40 x 40R x 6 - 3
16.1
-–
Lubrication via screw
50
50 x 10R x 6 - 6
12.2
50 x 20R x 6.5 - 5
19.5
50 x 40R x 6.5 - 3
23.3
63
63 x 10R x 6 - 6
13.8
63 x 20R x 6.5 - 5
24.0
63 x 40R x 6.5 - 3
28.7
154
Screw Assemblies | Ball Screw Assemblies BASA
Lubrication
Liquid grease lubricationwith a single-line piston distributor system and
Liquid grease lubrication with Ball Screw Assemblies ≤ Ø 12 mm
Lubricating grease
We recommend using Dynalub 520 with
--
With miniature versions
the following properties:
Under conventional environmental condi-
--
Lithium-based, high-performance grease
tions, this ground-fiber, homogeneous
You can download product and safety
of NLGI grade 00 according to
grease is ideally suited for the lubrication of
data sheets from our website at:
DIN 51818 (GP00K-20 according
linear elements:
to DIN 51826)
--
In single-line one-point lubrication
Please also observe the information on
--
Good water resistance
systems
page 162.
-–
Corrosion protection
--
For loads of up to 50% C
-–
Temperature range: -20 to +80 °C
--
For short-stroke applications ≥ 1 mm
Material numbers for Dynalub 520:
-–
For the permissible speed range of
--
R3416 043 00 (cartridge 400 g)
Ball Screw Assemblies
--
R3416 042 00 (bucket 5 kg)
-–
R0419 090 01 (5 ml maintenance kit)
Initial lubrication of the Ball Screw
The positioning and traversing instructions in
Assemblies (basic lubrication)
the illustration below must be complied with.
Fully assembled BASAs with a diameter less
When individual parts are supplied (nut on
When using single-line distributor systems,
than or equal to 12 mm are prelubricated at
mounting arbor) or with versions without
care should be taken that all lines and the
the factory with Dynalub 520.
basic lubrication at the factory, you must
piston distributors (including the connection
apply double the quantity of lubricant stated
to the BASA nut) are filled before performing
in table “Amount of lubricant for relubrication”
basic lubrication or relubrication. In the case
on page 156 via the nut’s lube hole before
of Ball Screw Assemblies ≤ Ø 12 mm, it is
commissioning.
advisable to use the maintenance set.
Positioning and traversing instructions
Horizontal mounting position
Vertical mounting position
1
2
1
2
3
3
2
2
1
1
1
Position of the nut during lubrication
2
Flange with lube port (if installed horizontally, the port should be at the top if possible)
3
Direction of travel after lubrication. Traversing path should be at least 3x the nut length.
Relubricating the Ball Screw Assemblies
Apply the relubrication quantity according
The pulse count that is needed for this is
to Table “Amount of lubricant for relubrica-
the integer quotient of the relubrication
The lubricant cycle time can then be
tion” on page 156 to the lube port until
amount according to table “Amount of lubri-
obtained by dividing the relubrication inter-
the specified relubrication interval shown
cant for relubrication” on page 156 and
val by the calculated pulse count.
in the diagram on page 155 has been
the piston distributor size.
In this connection, you must comply with
reached.
In this connection, you must ensure that the
the nut position and traversing path shown
smallest piston distributor size of 0.03 cm3
in the “Positioning and traversing instruc-
is not fallen short of.
tions” illustration.
155
Lubrication
load-dependent re-greasing intervals in
the case of a single-line piston distribu-
s
(M revolutions)
tor system and liquid grease lubrication
100.0
with Ball Screw Assemblies ≤ Ø 12 mm
(“dry axes”)
d0 ≤ Ø 40 mm
This applies to the following conditions:
37.5
--
Dynalub 520 grease or, alternatively,
Castrol Longtime PD 00, Elkalub GLS
135/N00 grease
--
No exposure to media
d0 > Ø 40 mm
-–
Standard seals
7.5
--
Driven screws
-–
Not mission critical operation
-–
Ambient temperature: T = 20 to 30 °C
F
m/C
1.0
s
= relubrication interval
0
0.1
0.2
0.3
0.4
in millions of revolutions
(106 revolutions)
C
= dynamic load rating
(N)
Fm
= average load
(N)
d0
= nominal diameter
(mm)
s in millions (of revs) · lead P (mm)
Conversion of the relubrication interval s
s in kilometers =
106
from millions of revolutions to kilometers:
Example:
37,5 · 106 (revs) · 16 (mm)
s in kilometers =
= 600 km
106
Notes
The load ratio Fm/C is the quotient of the average load Fm and the dynamic load rating C (see “Calculation”).
When using a single-line distributor system, you must ensure that the smallest piston distributor size of 0.03 cm3 is not fallen
short of.
We recommend using piston distributors from SKF. They should be installed as close as possible to the lube ports of the Ball Screw
Assembly nut.
Long lines and small line diameters should be avoided, and the lines should be laid on an upward slant.
If other consumers are connected to the single-line centralized lubrication system, the weakest link in the chain determines the lubrication
cycle time.
Pumping or storage tanks for the lubricant should be fitted either with a stirrer or a follower piston to guarantee the flow of lubricant
(to avoid funneling in the tank).
In this connection, please note the general lubrication information on page 157.
156
Screw Assemblies | Ball Screw Assemblies BASA
Lubrication
Amount of lubricant for relubrication
Size
Amount of lubricant for relubrication (cm3)
FED-E-B / FEM-E-B / FEM-E-S / FEP-E-S
ZEV-E-S
FDM-E-B / FDM-E-S
d0 x P x Dw - i
SEM-E-C / SEM-E-S / ZEM-E-S / ZEM-E-K / ZEM-E-A
6x1Rx0.8-3
0.05
-
-
6x2Rx0.8-3
0.05
-
-
8x1Rx0.8-4
0.06
-
-
8x2Rx1.2-4
0.07
-
-
8x2.5Rx1.588-3
0.11
-
-
8x5Rx1.588-3
0.12
-
-
12x2Rx1.2-4
0.17
-
-
12x5Rx2-3
0.33
0.33
-
12x10Rx2-2
0.33
0.33
-
16x5Rx3-3
-
0.90
-
16x5R/Lx3-4
0.70
-
1.75
16x10Rx3-3
0.85
1.10
-
16x16Rx3-2
0.95
-
-
16x16Rx3-3
1.20
-
-
16x16Rx3-6
1.35
-
-
20x5R/Lx3-4
1.00
1.30
2.95
20x5Rx3-5
1.15
-
-
20x10Rx3-4
1.50
-
-
20x20Rx3.5-2
1.85
-
-
20x20Rx3.5-3
2.40
-
-
20x20Rx3.5-6
2.50
-
-
20x40Rx3.5-4
1.75
-
-
25x5R/Lx3-4
1.50
-
3.50
25x5Rx3-7
-
1.95
-
25x10Rx3-4
1.85
-
4.15
25x10Rx3-5
-
2.05
-
25x25Rx3.5-2
2.65
-
-
25x25Rx3.5-3
3.45
-
-
25x25Rx3.5-4.8
1.65
-
-
25x25Rx3.5-6
3.90
-
-
32x5Lx3.5-4
2.50
-
-
32x5Rx3.5-4
2.15
-
4.90
32x5Rx3.5-5
-
2.40
-
32x10Rx3.969-5
3.05
3.25
6.65
32x20Rx3.969-2
2.80
-
-
32x20Rx3.969-3
3.55
-
-
32x20Rx3.969-6
3.70
-
-
32x32Rx3.969-2
4.05
-
-
32x32Rx3.969-3
5.45
-
-
32x32Rx3.969-4.8
2.85
-
-
32x32Rx3.969-6
6.20
-
-
32x64Rx3.969-4
3.35
-
-
40x5Lx3.5-5
3.35
-
-
40x5Rx3.5-5
2.95
-
7.60
40x10Lx6-4
6.50
-
-
40x10Rx6-4
6.65
-
16.75
40x10Rx6-5
7.70
-
-
40x10Rx6-6
8.15
-
19.70
40x12Rx6-4
6.75
-
-
40x16Rx6-4
9.15
-
21.35
40x20Rx6-3
8.70
-
20.55
40x20Rx6-8
9.35
-
-
40x25Rx6-8
11.00
-
-
40x30Rx6-8
12.20
-
-
157
Lubrication
Size
Amount of lubricant for relubrication (cm3)
FED-E-B / FEM-E-B / FEM-E-S / FEP-E-S
ZEV-E-S
FDM-E-B / FDM-E-S
d0 x P x Dw - i
SEM-E-C / SEM-E-S / ZEM-E-S / ZEM-E-K / ZEM-E-A
40x40Rx6-2
10.40
-
-
40x40Rx6-3
14.30
-
-
40x40Rx6-6
15.00
-
-
50x5Rx3.5-5
4.65
-
11.70
50x10Rx6-4
-
-
21.90
50x10Rx6-6
10.75
-
25.55
50x12Rx6-6
11.60
-
-
50x16Rx6-6
16.15
-
-
50x20Rx6.5-3
12.65
-
-
50x20Rx6.5-5
17.35
-
34.75
50x20Rx6.5-8
9.90
-
-
50x25Rx6.5-6
10.45
-
-
50x30Rx6.5-6
14.80
-
-
50x40Rx6.5-2
15.45
-
-
50x40Rx6.5-3
20.65
-
-
50x40Rx6.5-6
19.15
-
-
63x10Rx6-4
-
-
25.55
63x10Rx6-6
12.15
-
30.00
63x20Rx6.5-3
15.45
-
-
63x20Rx6.5-5
21.35
-
43.75
63x20Rx6.5-8
14.35
-
-
63x40Rx6.5-2
18.90
-
-
63x40Rx6.5-3
25.40
-
-
63x40Rx6.5-6
26.95
-
-
80x10Rx6.5-6
19.10
-
66.00
80x20Rx12.7-6
65.50
-
132.75
Note: The sizes that are listed in the table are not available for all nut types.
You can find the respective size range in the chapter entitled “Nuts” from page 24 onward.
158
Screw Assemblies | Ball Screw Assemblies BASA
Lubrication
Oil lubrication with a single-line piston distributor system
Oil lubricant
We recommend using Shell Tonna S 220
--
Special demulsifying oil CLP or CGLP as per DIN 51517-3 for machine bed tracks and
with the following properties:
tool guides
--
A blend of highly refined mineral oils and additives
-–
Can be used even when mixed with significant quantities of metalworking fluids
Initial lubrication of the Ball Screw
Assemblies (basic lubrication)
Fully assembled BASAs with a diameter less
When individual parts are supplied (nut on
When using single-line distributor systems,
than or equal to 12 mm are prelubricated at
mounting arbor) or in the case of special
care should be taken that all lines and the
the factory with Dynalub 520.
designs without basic lubrication at the
piston distributors (including the connection
factory, you must apply double the quantity of
to the BASA nut) are filled before performing
Fully assembled BASAs with a diameter
lubricant stated in table “Amount of lubricant
basic lubrication or relubrication.
greater than 12 mm are prelubricated at the
for oil lubrication” on page 159 via the nut’s
factory with Dynalub 510.
lube hole before commissioning.
The positioning and traversing instructions in
the illustration below must be complied with.
Positioning and traversing instructions
Horizontal mounting position
Vertical mounting position
1
2
1
2
3
3
2
2
1
1
1
Position of the nut during lubrication
2
Flange with lube port (if installed horizontally, the port should be at the top if possible)
3
Direction of travel after lubrication. Traversing path should be at least 3x the nut length.
Relubricating the Ball Screw Assemblies
Apply the relubrication quantity according to
The pulse count that is needed for this is the
The lubricant cycle time can then be obtained
Table “Amount of lubricant for oil lubrication”
integer quotient of the relubrication amount
by dividing the relubrication interval by the
on page 159 to the lube port until the speci-
according to table “Amount of lubricant for
calculated pulse count.
fied relubrication interval in the diagrams on
oil lubrication” on page 159 and the piston
In this connection, you must comply with the
page 159 has been reached.
distributor size.
nut position and traversing path shown in
In this connection, you must ensure that the
the “Positioning and traversing instructions”
smallest piston distributor size of 0.03 cm3 is
illustration.
not fallen short of.
159
Lubrication
Amount of lubricant for oil lubrication
Nominal diameter
Initial lubrication
Nominal diameter
Relubrication
Note:
d0 (mm)
Ve (cm3)
d0 (mm)
Vn (cm3)
In the case of double-threaded FED-E-B
6 / 8 / 12 / 16
0.3
6 / 8 / 12 / 16
0.03
single flange nuts and oil lubrication, the
20 / 25 / 32
0.6
20 / 25 / 32
0.06
values in the tables do not apply!
40
2.0
40
0.40
Please consult with us!
50 / 63
4.0
50 / 63
0.80
80
8.0
80
1.60
Load-dependent lubrication in the case
s
(M revolutions)
s (h)
of oil lubrication with single-line piston
1,5
11,5
distributor systems (“dry axes”)
1,4
Ø 6,Ø 8, Ø 12, Ø 16
10,8
1,3
10,0
1,2
9,2
1,1
8,5
1,0
7,7
This applies to the following conditions:
0,9
6,9
--
Lubricating oil is Shell Tonna S 220
0,8
6,2
-–
No exposure to media
0,7
5,4
-–
Standard seals
0,6
4,6
-–
Driven screws
0,5
3,8
-–
Not mission critical operation
0,4
3,1
-–
Ambient temperature: T = 20 to 30 °C
0,3
2,3
0,2
1,5
0,1
0,8
F
m/C
s
= relubrication interval
0,0
0,0
0
0,1
0,2
0,3
0,4
in millions of revolutions
106 rev.
or hours
(h)
C = dynamic load rating
(N)
s
(M revolutions)
s (h)
Fm = average load
(N)
1,5
15
1,4
14
Notes
1,3
13
The load ratio Fm/C is the quotient of the
1,2
12
Ø 20, Ø 25, Ø 32, Ø 40, Ø 50, Ø 63, Ø 80
average load Fm and the dynamic load
1,1
11
rating C (see “Calculation”).
1,0
10
0,9
9
0,8
8
0,7
7
The relubrication interval s is defined either
0,6
6
by the number of revolutions in millions or
0,5
5
the operating time in h.
0,4
4
The value that is reached first defines the
0,3
3
lubrication interval.
0,2
2
0,1
1 Fm/C
0
0
0
0,1
0,2
0,3
0,4
Conversion of the relubrication interval s
s in millions (of revs) · lead P (mm)
from millions of revolutions to kilometers:
s in kilometers =
106
Example:
1.3 · 106 (revs) · 16 (mm)
s in kilometers =
= 20.8 km
106
160
Screw Assemblies | Ball Screw Assemblies BASA
Lubrication
Oil lubrication with a single-line piston distributor system
Notes
When using a single-line distributor system, you must ensure that the smallest piston distributor size of 0.03 cm3 is not fallen short of.
We recommend using piston distributors from SKF. They should be installed as close as possible to the lube ports of the Ball Screw
Assembly nut.
Long lines and small line diameters should be avoided, and the lines should be laid on an upward slant.
If other consumers are connected to the single-line centralized lubrication system, the weakest link in the chain determines the lubrication
cycle time.
In this connection, please note the general lubrication information on page 157.
Design example of lubrication a typical two-axis application using central lubrication
X axis
Component or characteristic value
Specifications
Ball Screw Assembly
FEM-E-S 32x10Rx3.969-5; C = 38000 N; Part no.: R 1512 340 13 (page 34)
Average load.
Fm = 9 510 N
Stroke
1,000 mm
Average speed
nm = 1,000 rpm
Ambient temperature
20 to 30 °C
Mounting orientation
Horizontal
Lubrication
Single-line distributor system for all axes with Shell Tonna S 220 oil
Exposure
No exposure to media, chips, dust
Design sizes
Design
Sources of information
1. Normal stroke or short stroke
Normal stroke: Stroke > nut length L; 1,000 mm > 77 mm!
For short stroke information, see page 133, for L
i.e. normal stroke applies!
see page 34
2. Initial lubrication amount
Initial lubrication amount:
See basic lubrication on page page 152
At the factory with Dynalub 510
3. Relubrication amount
Relubrication amount: 0.06 cm3
Relubrication amount from table page 152
4. Mounting orientation
Pay attention to the positioning and traversing instructions
see “Positioning and traversing instructions” on page 150
for the horizontal mounting orientation!
5. Piston distributor size
Permitted piston distributor size: 0.03 cm3
see page 151
6. Number of pulses
0.06 cm3
Relubrication amount
Number of pulses
=
= 2
Number of pulses =
0.03 cm3
Permissible piston distributor size
7. Load ratio
9,510 N
Load ratio
=
= 0.25
Load ratio
= Fm
38,000 N
C
Fm and C from specifications
8. Relubrication interval
Relubrication interval: 0.38 · 106 revs or every 3.8 h
From diagram on page 151 167 with a load ratio of 0.25
9. Effective relubrication interval
Since at nm = 1,000 rpm the 0.38 · 106 revs is only
nm from specifications is the effective relubrication
reached after 6.33 h, the read-off 3.8 h is effective as the
interval, see the “Note” on page 157
lubrication interval.
10. Lube cycle
4 h
Eff. Relubrication interval
Lube cycle =
= 2 h
Lube cycle =
2
Number of pulses
Interim result
In the case of the X-axis, the system must supply the nut of the Ball Screw Assembly with a minimum amount of 0.03 cm3
(X-axis)
of Shell Tonna S 220 every two hours.
161
Lubrication
Y axis
Component or characteristic value
Specifications
Ball Screw Assembly
FEM-E-B 16x16Rx3-3; C = 11,200 N; Part no.: R 1502 060 63 (page 36)
Average load.
Fm = 1,200 N
Stroke
500 mm
Average speed
nm = 1,500 rpm
Ambient temperature
20 to 30 °C
Mounting orientation
Horizontal
Lubrication
Single-line distributor system for all axes with Shell Tonna S 220 oil
Exposure
No exposure to media, chips, dust
Design sizes
Design
Sources of information
1. Normal stroke or short stroke?
Normal stroke: Stroke > nut length L; 500 mm > 61 mm!
For short stroke information, see page 133, for L see
i.e. normal stroke applies!
page 36
2. Initial lubrication amount
Initial lubrication amount:
See basic lubrication on page page 156
At the factory with Dynalub 510
3. Relubrication amount
Relubrication amount: 0.03 cm3
Relubrication amount from table page 159
4. Mounting orientation
Pay attention to the positioning and traversing instruc-
see “Positioning and traversing instructions” on page 158
tions for the horizontal mounting orientation!
5. Piston distributor size
Permitted piston distributor size: 0.03 cm3
see page 156
6. Number of pulses
0.03 cm3
Relubrication amount
Number of pulses
=
= 1
Number of pulses =
0.03 cm3
Permissible piston distributor size
7. Load ratio
1,200 N
Load ratio
=
= 0.11
Load ratio
= Fm
11,200 N
C
Fm and C from specifications
8. Relubrication interval
Relubrication interval: 1.3 · 106 revs or every 10 h
From diagram on page 159 with a load ratio of 0.11
9. Effective relubrication interval
Since at nm = 1,500 rpm the 1.3 · 106 revs is only
nm from specifications is the effective relubrication inter-
reached after 14.4 h, the read-off 10 h is effective as the
val, see the “Note” on page page 157
lubrication interval.
10. Lube cycle
10 h
Eff. relubrication interval
Lube cycle =
= 10 h
Lube cycle =
1
Number of pulses
Interim result
In the case of the Y-axis, the system must supply the nut of the Ball Screw Assembly with a minimum amount of 0.03
(Y-axis)
cm3 of Shell Tonna S 220 every ten hours.
Final result
Since the axes in this example are both to be supplied by a single-line distributor system, the X-axis - with its lower
(Two-axis lubrication)
(two-hour) lubrication cycle - determines the overall lubrication cycle of the system, i.e. the Y-axis is lubricated
every two hours too.
162
Screw Assemblies | Ball Screw Assemblies BASA
Lubrication
Lubricants
Dynalub high-performance lubricant for linear motion technology
(Approved in the countries of the EU only; not approved outside of the EU)
Product description of Dynalub 510
Dynalub 510 is a lithium-based high-perfor-
Application area
mance grease of NLGI grade 2 that has been
Under conventional environmental condi-
Part number
Packaging unit
specially designed for linear motion technol-
tions, this ground-fiber, homogeneous grease
R3416 037 00
1 x 400 g
ogy applications. It is characterized by its
is ideally suited for the lubrication of linear
R3416 035 00
Hobbock 25 kg
good water resistance and corrosion protec-
elements:
tion properties and can be used at tempera-
--
At loads of up to 0.5 Cdyn
tures ranging from -20 °C to +80 °C.
--
Also with short-stroke applications ≥ 1 (mm)
Chemical composition
Mineral base oil, special lithium soap, active ingredients
Technical data
Identification
KP2K-20
DIN 51 825
Appearance
Light brown-beige, ground-fiber
For additional information, see the “Dynalub
Service temperature range
-20 °C to +80 °C
510 safety data sheet”
NLGI grade
2
R310DE 2052 (2004.04)
Worked penetration
265-295 1/10 mm
DIN ISO 2137
Water resistance
0-60, 1-90
DIN 51 807 T1
Melting point in °C
> 165
DIN ISO 2176
Flash point in °C
> 200 base oil
DIN ISO 2592
Basic oil viscosity
100 mm2/s 40 °C
DIN 51 562
10 mm2/s 100 °C
Flow pressure at -20 °C
< 1,400 hPa
DIN 51 805
EMCOR test
0/0
DIN 51 802
Density at +25 °C
Approx. 0.92 g/cm3
DIN 51 757
Copper corrosion
2 (24 h/120 °C)
DIN 51 811
Four ball tester welding load
> 2,000 N
DIN 51 350 T4
Four ball tester impression diameter
0.93 (400 N, 1 h)
DIN 51 350, part 5
Shelf life in container
2 years
Product description of Dynalub 520
Dynalub 520 is a lithium-based high-perfor-
Application area
mance grease of NLGI grade 00 that has
Under conventional environmental condi-
Part number
Packaging unit
been specially designed for linear motion
tions, this ground-fiber, homogeneous
R3416 043 00
1 x 400 g
technology applications. It is characterized
grease is ideally suited for the lubrication of
R3416 042 00
Bucket 5 kg
by its good water resistance and corrosion
linear elements in miniature versions and for
R0419 090 01
5 ml maintenance kit
protection properties and can be used at
use in central lubrication systems.
temperatures ranging from -20 °C to +80 °C.
Chemical composition
Mineral base oil, special lithium soap, active ingredients
Technical data
Identification
KP00K-20
DIN 51 825
Appearance
Light brown-beige, ground-fiber
For additional information, see the “Dynalub
Service temperature range
-20 °C to +80 °C
520 safety data sheet”
NLGI grade
00
R310DE 2053 (2004.04)
Worked penetration
400-430 1/10 mm
DIN ISO 2137
Water resistance
1-90
DIN 51 807 T1
Melting point in °C
> 160
DIN ISO 2176
Flash point in °C
> 200 base oil
DIN ISO 2592
Basic oil viscosity
100 mm2/s 40 °C
DIN 51 562
10 mm2/s 100 °C
Flow pressure at -20 °C
< 700 hPa
DIN 51 805
EMCOR test
0
DIN 51 802
Density at +25 °C
Approx. 0.92 g/cm3
DIN 51 757
Copper corrosion
0-1 (24 h/100 °C)
DIN 51 811
Four ball tester welding load
1,800 N
DIN 51 350 T4
Four ball tester impression diameter
0.80 (400 N, 1 h)
DIN 51 350 T5
Shelf life in container
2 years
163
Lubrication
164
Screw Assemblies | Ball Screw Assemblies BASA
Calculation and examples
Calculation
On request, we can perform all calcula-
See “Design Calculation Service Form” on
tions to your specifications.
page 183
Average speed and average load
Where the operating conditions vary (fluctu-
be calculated using the average values
ating speed and load), the service life must
Fm and nm.
--
Where the speed fluctuates, the average
|n1| · qt1 + |n2| · qt2 + ... + |nn| · qtn
speed nm
is calculated as follows:
nm =
1
100%
n1, n2, ... nn
= speeds in phases 1 ... n
(rpm)
nm
= average speed
(rpm)
qt1, qt2, ... qtn = discrete time step in phases 1 ... n
(%)
The following applies to the effective
F
>
2.8 · Fpr
Feff n
= |Fn|
3
equivalent bearing load:
2
|Fn|
F
≤
2.8 · Fpr
Feff n
=
+ 1
· Fpr
2.8 · F
pr
C
= dynamic load rating
(N)
Feff n = effective equivalent axial load during phase n
(N)
Fn
= axial load during phase n
(N)
Fpr
= pre-tensioning force (see tables on pages 148/151)
(N)
-–
Where the load fluctuates and the speed
3
3
3
3
is constant, the average load Fm is cal-
qt1
qt2
qtn
Fm =
Feff 1
·
+
Feff 2
·
+ ... +
Feff n
·
2
culated as follows:
100%
100%
100%
Feff 1, Feff 2, ... Feff n = effective equivalent axial load during phases 1 ... n
(N)
Fm
= equivalent dynamic axial load
(N)
qt1, qt2, ... qtn
= discrete time step for Feff 1, ... Feff n
(%)
-–
Where both the load and the speed fluc-
3
3
3
3
tuate, the average load Fm
is calculated
|n1|
qt1
|n2|
qt2
|nn|
qtn
Fm =
Feff 1
·
·
+
Feff 2
·
·
+ ... +
Feff n
·
·
3
as follows:
nm
100%
nm
100%
nm
100%
Feff 1, Feff 2, ... Feff n
= effective equivalent axial load
during phases 1 ... n
(N)
Fm
= equivalent dynamic axial load
(N)
n1, n2, ... nn
= speeds in phases 1 ... n
(rpm)
nm
= average speed
(rpm)
qt1, qt2, ... qtn
= discrete time step for Feff 1, ... Feff n
(%)
3
Nominal service life
3
fac · C
Fm
L
fac · C
L =
·
106
4
⇒ C =
·
5
⇒ Fm =
6
Fm
fac
106
3
L
Service life in revolutions L
106
C
= dynamic load rating
(N)
Fm
= equivalent dynamic axial load
(N)
L
= nominal service life in revolutions
(-)
fac
= Correction factor for tolerance grades (see page 141)