Rexroth: Screw Assemblies. Catalog (R999001185/2018-10) - page 2

Screw Assemblies | Ball Screw Assemblies BASA

Product overview

Definition of Ball Screw Assembly

ISO 3408-1 defines a Ball Screw Assembly as follows:

A unit consisting of a ball screw shaft, ball nut and balls which is able to convert rotary motion into linear motion, and vice versa.

The basic functioning of a Ball Screw Assembly is easy to describe, but there are numerous different designs and requirements for

practical applications.

Several innovations and adaptations have contributed to the extension of the product portfolio.

Rexroth Ball Screw Assemblies provide design engineers with

For deliveries within Europe, there is the quantity-dependent

diverse solutions for transport and positioning tasks with driven

GoTo Europe Focused Delivery Program.

screws or with driven nuts.

The special delivery times and quantities can be found in the

At Rexroth you will be sure to find exactly the kind of tailor-made

“GoTo Europe Focused Delivery Program” catalog.

products you need for special applications.

Almost all single nuts in the version with backlash can be easily

The flange nuts from the standard series are available in versions

mounted on the screw by the customer himself, especially during

with Rexroth or DIN mounting dimensions.

servicing. In addition, the standard series adjustable-preload

In order to make it easier in future for customers to decide

single nut allows the customer to carry out preload adjustment

between particular series and/or sizes in terms of delivery time too,

in-house.

we have introduced A, B and C categories for nuts.

Appropriate nut housings for the standard series and several types

Each individual nut part number is assigned to a particular

of end bearings are also stocked.

category.

A parts (GoTo Europe Focused Delivery Program) are always

stocked to meet average order quantities.

B parts (corresponds to standard range) are in stock, whereas

For C parts, inquiries have to be made regarding the delivery

capability.

Precision screws

Calculation software and product configuration tool

in a variety of sizes and of unequaled quality have long been an

The Linear Motion Designer (LMD) calculation software is used for

essential part of our product range. Our comprehensive, world-

designing and calculating Ball Screw Assemblies BASA.

wide stocks guarantee fast response times in every location. Avail-

ability is one advantage, low prices another. Every nut featured in

The CAD model is created via the product configuration tool.

this catalog can be combined with precision screws.

This can be accessed via the Rexroth online portal / eConfigurators

Precision screws can also be supplied without nuts to allow

and Tools.

customers to machine the screw ends themselves.

For special servicing jobs, please consult us.

www.boschrexroth.de/gewindetriebkonfigurator

This online configuration tool makes it possible to visually config-

ure Ball Screw Assemblies quickly to match specific require-

ments in each case.

The tool automatically checks the plausibility of changed param-

eters. The link to the eShop means that Ball Screw Assemblies

can be directly ordered at any time of the day or night.

Product overview

Benefits

Smooth functioning due to the principle of internal recirculation

-–

Especially smooth running due to the optimal pick-up of balls from the raceway

-–

Adjustable-pre-tensioned single nut

-–

High load rating due to large number of balls

-–

Short nut length

-–

No protruding parts, nut is easily mounted

-–

Smooth outer shell

-–

Effective, wiping sealing

-–

Large range of series available ex stock

Screw Assemblies | Ball Screw Assemblies BASA

Product overview

Ball Screw Assemblies for all applications

Drive units

You will find further system solutions in our catalog on Rexroth Drive Units.

This catalog contains Ball Screw Assemblies with a protecting housing, including versions with integrated screw supports and matching

AC servo motors.

To perform particularly demanding positioning tasks we have developed the Integrated Measuring System for Ball Rail and Roller Rail

Systems. This enables us to achieve maximum design flexibility and operating precision.

Sample applications

Rexroth Ball Screw Assemblies have been successfully implemented worldwide in the following areas:

Cutting operations

Injection molding machines

-–

Forming operations

-–

Food and packaging industries

-–

Automation and handling

-–

Medical technology

-–

Woodworking

-–

Textile industry

-–

Electrical and electronics

-–

etc.

-–

Printing and paper industry

Machining center

Press brake

Vertical axis with driven nut

Lathe

Screw Assemblies | Ball Screw Assemblies BASA

Inquiries and orders

All nuts, screws and end machining details can now be defined with the ordering code as a complete precision Ball Screw Assembly.

We have taken account of all the existing selection criteria as well as adding new ones. The diversity of possible combinations and specifica-

tions is basically limitless. Attention is focused in particular on the definition of end machining details. For many design versions there is a

prepared definition, which means that a suitable solution can be devised for virtually any application. If you wish to send us an inquiry, simply

complete the form at the end of this catalog.

If you submit a manufacturing drawing as a CAD file in Pro/E, STEP or DXF, you can e-mail the data to us.

If the drawing exists on paper only, we will of course accept a scan or a drawing sent by conventional mail.

-–

If no drawing is available, please specify your wishes using the variable ordering code. The available options are shown at several places

in the catalog.

Each customer-specific Ball Screw Assembly is issued with an ID number when an order is placed. For queries or repeat orders, simply quote

this number. If you know the specific ordering code you can also easily generate a CAD drawing yourself in numerous file formats via the

functionality provided on our website.

Rexroth offers an online product configuration tool for this and for directly submitting product requests.

To configure specific solutions quickly and easily, simply go to www.boschrexroth.de/gewindetrieb-konfigurator.

This online tool enables you to visually configure the specific Ball Screw Assembly or Planetary Screw Assembly that you need. You can

select any catalog option or any defined product modification. The tool automatically checks the plausibility of changed parameters. Once

configuration is complete, 2D and 3D data is available for download in all established formats. As regards end machining, you can choose

either standard versions or tailor-made solutions. Rexroth machines the screw ends of the Ball Screw Assembly or Planetary Screw Assem-

bly so that it matches the customer's connecting design and fulfills the desired requirements. The configuration tool which is incorporated

into the eShop allows you to obtain a price for customer-specific Ball Screw Assemblies, and also to directly order the product.

The screw diameter size that can be selected for Ball Screw Assemblies ranges from 6 to 80 millimeters. In addition, any type of nut can be chosen.

Inquiries and orders

Customers who are registered in the eShop can generate manufacturing drawings as well as requesting CAD models. This drawing can then

be used directly by our production departments, which accelerates order processing and delivery. What's more, in this case you can order

directly in the eShop.

In the case of configuration without prior registration, only CAD models are provided. We can refer to this if an order is placed, and use it

to produce a manufacturing drawing.

Access the eShop via this link: https://www.boschrexroth.com/eshop

The ordering code provided on page 22 covers all the parameters of a Ball Screw Assembly. Once you have defined the nominal

diameter and lead and entered the total length, the functionality guides you through a succession of dialog boxes allowing you to select the

desired options.

Nominal diameters, leads

Lead P

2.5

Available ball nut sizes

Combinable with VSE

Overall length L_tot of a Ball Screw Assembly

Overall length L_tot

Screw Assemblies | Ball Screw Assemblies BASA

Inquiries and orders

Identification system for short product names BASA / ordering data

Ball Screw Assembly

BASA

20 x 5 R x3

FEM-E-C

-4

A Z

120

A Z 120

1234.5

Ball Screw Assembly

Size

Nominal diameter (mm)

Lead (mm)

Direction of lead

R … right, L … left

Ball diameter (mm)

Nut type

FEM-E-B Single nut with flange miniature series

FEP-E-S Single nut with flange with recirculation caps

FEM-E-S Single nut with flange

FEM-E-C Single nut with flange DIN 69051, Part 5

SEM-E-S Adjustable-preload single nut

SEM-E-C Adjustable-preload single nut DIN 69051, Part 5

ZEM-E-S Cylindrical single nut

ZEM-E-K Cylindrical single nut

ZEM-E-A Cylindrical single nut

ZEV-E-S Screw-in nut

FDM-E-S Double nut with flange

FDM-E-C Double nut with flange DIN 69051, Part 5

FED-E-B Single nut with flange

FAR-B-S Driven single nut with flange

Number of ball track turns in the nut

Nut rework

00 … no rework

02 … axial lube point

01 … additional surface (B flange)⁴⁾ 03 … axial lube port and

additional surface

Sealing system

0 … no seals

2¹⁾ … reinforced seal

1 … standard seal

3²⁾ … low-friction seal

Preload classes

0 … C0 (standard backlash)

4 … C4 (high preload DN⁶⁾)

1 … C00 (reduced backlash)

5 … C5 (average preload DN

⁶⁾)

2 … C3³⁾ (high preload SN⁵⁾)

6 … C2 (average preload SN)

3 … C1 (slight preload SN⁵⁾)

Accuracy

T3, T5, T7, T9

Screw

R … Precision screw BAS

Left screw end

Form:

… standard form

…A with wrench flat on the ball screw

…B with wrench flat on the collar

Option

Z… centering per DIN 332-D

(machining of end face):

S… hex socket

G…female thread

K… none

Versions:

… standard version

Right screw end

… see left screw end

Overall length [mm]

Documentation

0 … Standard (acceptance test report) 2 … Torque test report

1 … Lead test report

3 … Lead and torque test report

5 … Two-point compensation

Lubrication

0 … Preserved

1 … Preserved and nut with basic greasing

3 … Front Lube Unit on right, ball nut with basic greasing

2 … Front Lube Unit on left, ball nut with basic greasing

4 … Front Lube Unit at both ends, ball nut with basic greasing

1) only for d₀ 25 to 63; consider the higher frictional torque! See page 152

5) SN = Single nut

2) See page 152 for sizes

6) DN = Double nut

3) only for d₀ 16 to 80

4) for FEM-E-C and FDM-E-C with mounting dimensions according to DIN 69051, Part 5 flange type B.

FDM-E-C only available as a complete Ball Screw Assembly.

Inquiries and orders

Mounting direction of nut types

Definition: The centering diameter on a nut with flange, the slotted nut on a driven nut, and the lube bore on a cylindrical nut points to the

right end of the screw.

Note: The front lube unit is delivered ready-mounted to the Ball Screw Assembly.

FEM

Centering diameter D₁

FED

FDM

FEP

SEM

Centering diameter D₁

ZEV

Lube port

ZEM

Lube port

Slotted nut

FAR

Screw Assemblies | Ball Screw Assemblies BASA

Nuts, miniature series

Miniature series

Miniature series Ball Screw Assemblies are available with nominal diame-

ters of 6 - 12 mm, and leads of 1 - 10 mm.

The nut types are flange, cylindrical and adjustable-preload single nuts as

well as screw-in nuts.

Overview of formats

FEM-E-B

FEM-E-S

SEM-E-S

ZEM-E-S

Preload classes

Option

Preload class

Definition

Standard backlash

C00

Reduced backlash

High preload (single nut)

Moderate preload (single nut)

High preload (double nut)

Average preload (double nut)

Average preload (single nut)

ZEV-E-S

See nut versions for allocation of the preload classes

Nuts, miniature series

Single nut with flange FEM-E-B

Rexroth connection dimensions

flange type B

With seals, preload class: C0, C00

Except for size 8 x 2.5 and 12 x 5/10:

Preload class C1.

Tolerance grade: T5, T7, T9

Ordering data:

BASA

8 x 2R x 1.2

FEM-E-B - 4

831K062

41K050

250

Kategorie

Größe

Materialnummer

Tragzahlen³⁾

Geschwindigkeit¹⁾

d₀

= nominal diameter

dyn. C

stat. C₀

v_max

= lead

d₀ x P x D_w - i

(N)

(m/min)

(R = right-hand side)

6 x 1R x 0,8 - 3²⁾

R1532 100 16

1,080

1,030

D_W = ball diameter

6 x 2R x 0,8 - 3²⁾

R1532 120 16

1,070

1,020

= number of ball track turns

8 x 1R x 0,8 - 4²⁾

R1532 200 16

1,310

1,850

8 x 2R x 1,2 - 4²⁾

R1532 220 16

2,360

2,950

8 x 2,5R x 1,588 - 3

R1532 230 06

2,640

2,800

8 x 5R x 1,588 - 3

R1532 260 06

2,500

2,650

12 x 2R x 1,2 - 4²⁾

R1532 420 06

2,690

4,160

12 x 5R x 2 - 3

R1532 460 06

4,560

5,800

12 x 10R x 2 - 2

R1532 490 06

3,000

3,600

1) See “Characteristic speed d₀ · n” on page 141 and “Critical speed n_cr” on page 176

2) Supplied only as complete Ball Screw Assembly.

3) The load ratings are valid for tolerance grade T3 and T5 only.

For other tolerance grades, please take into account the correction factor f_ac on page 141.

Lube port

For 8 x 5R x 1,588 - 3

Lube port

at flange center

L₇

D₄

D₇

L₃

L₄

D₅

Size

(mm)

Mass

d₁

d₂

D₁

D₄

D₅

D₆

D₇

L₃

L₄

L₇

L₁₄

d₀ x P x D_w - i

(kg)

6 x 1R x 0.8 - 3

6.0

5.3

1.5

3.4

11.6

3.5

8.1

3.5

0.020

6 x 2R x 0.8 - 3

6.0

5.3

1.5

3.4

14.6

3.5

11.1

3.0

0.020

8 x 1R x 0.8 - 4

8.0

7.3

1.5

3.4

15.5

6.0

9.5

3.5

0.035

8 x 2R x 1.2 - 4

8.0

7.0

1.5

3.4

19.5

6.0

13.5

3.0

0.050

8 x 2.5R x 1.588 - 3

7.5

6.3

2.0

3.4

16.0

6.0

10.0

3.0

0.030

8 x 5R x 1.588 - 3

7.5

6.3

3.4

23.5

6.0

17.5

0.050

12 x 2R x 1.2 - 4

11.7

10.8

2.0

4.5

19.0

8.0

11.0

2.5

0.055

12 x 5R x 2 - 3

11.4

9.9

2.0

4.5

28.0

8.0

20.0

6.0

0.075

12 x 10R x 2 - 2

11.4

9.9

2.0

4.5

33.0

8.0

25.0

8.0

0.085

Screw Assemblies | Ball Screw Assemblies BASA

Nuts, miniature series

Single nut with flange FEM-E-S

Rexroth connection dimensions

With seals

Preload class: C0, C00, C1

Tolerance grade: T5, T7, T9

d₀

= nominal diameter

= lead (R = right-hand)

D_W = ball diameter

Ordering data:

= number of ball track turns

BASA

12 x 5R x 2

FEM-E-S - 3

81K060

41K060

250

Category

Size

Part number

Load ratings²⁾

Linear speed¹⁾

dyn. C

stat. C₀

v_max

d₀ x P x D_w - i

(N)

(m/min)

8 x 2.5R x 1.588 - 3

R1532 230 03

2,640

2,800

12 x 5R x 2 - 3

R1532 460 23

4,560

5,800

12 x 10R x 2 - 2

R1532 490 13

3,000

3,600

1) See “Characteristic speed d₀ · n” on page 141 and “Critical

speed n_cr” on page 176

2) The load ratings are valid for tolerance grade

T5 only.

For other tolerance grades, please take into account the correction factor f_ac on page 141.

Lube port²⁾ at

Nut rework: Axial lube port³⁾

flange center

L₁₀

D₇

L₃

L₄

3) The axial lube port

S_x is always located on the pitch circle D₆ of the nut unit.

Size

(mm)

Mass

d₁

d₂

D₁

D₅

D₆

D₇

L₃

L₄

L₁₀

S⁴⁾

S_x

d₀ x P x D_w - i

(°)

(kg)

8 x 2.5R x 1.588 - 3

7.5

6.3

3.4

8.0

Ø4

30.0

0.05

12 x 5R x 2 - 3

11.4

9.9

4.5

10.0

330.0

0.12

12 x 10R x 2 - 2

11.4

9.9

4.5

16.0

330.0

0.14

4) Lube port machining: flat surface L₃ ≤ 15 mm, for size 8 x 2.5 a DIN 3405 funnel-type lube nipple is provided.

Nuts, miniature series

Adjustable-preload single nut SEM-E-S

Rexroth connection dimensions

With seals

Adjustable preload

Tolerance grade: T5, T7

d₀

= nominal diameter

= lead (R = right-hand)

D_W = ball diameter

Ordering data:

= number of ball track turns

BASA

12 x 5R x 2

SEM-E-S - 3

81K060

41K060

250

Category

Size

Part number

Load ratings²⁾

Linear speed¹⁾

Centering diameter D₁

dyn. C

stat. C

v_max

after adjustment

d₀ x P x D_w - i

(N)

(m/min)

min. (mm)

max. (mm)

8 x 2.5R x 1.588 - 3

R1532 230 04

2,640

2,800

15.953

15.987

12 x 5R x 2 - 3

R1532 460 24

4,560

5,800

23.940

23.975

12 x 10R x 2 - 2

R1532 490 14

3,000

3,600

23.940

23.975

1) See “Characteristic speed d₀ · n” on page 141 and “Critical speed n_cr” on page 176

2) The load ratings are valid for tolerance grade T3 and T5 only. For other tolerance grades, please take into account the correction factor f_ac on page 141.

Lube port²⁾ at flange center

L₅

L₁₀

Nut rework: Axial lube port³⁾

L₃

L₄

3,4

Version for

L₃

L₄

8 x 2.5 R x 1.588-3

3) The axial lube port S_x is always located on the pitch circle D₆ of the nut unit.

Size

(mm)

Mass

d₁

d₂

D₁

D₅

D₆

D₇

L₃

L₄

L₅

L₁₀

S⁴⁾

S_x

d₀ x P x D_w - i

(°)

(kg)

8 x 2.5R x 1.588 - 3

7.5

6.3

3.4

3.0

—

3.0

Ø4

0.06

12 x 5R x 2 - 3

11.4

9.9

4.5

8.0

0.12

12 x 10R x 2 - 2

11.4

9.9

4.5

10.5

0.13

4) Lube port machining: flat surface L₃ ≤ 15 mm, for size 8 x 2.5 a DIN 3405 funnel-type lube nipple is provided.

Screw Assemblies | Ball Screw Assemblies BASA

Nuts, miniature series

Cylindrical Single Nut ZEM-E-S/ZEM-E-K

Rexroth connection dimensions

With seals

Preload class: C0, C00, C1

Except for size 12 x 2:

Preload class C0, C00

Tolerance grade: T5, T7, T9

Ordering data:

d₀

= nominal diameter

= lead (R = right-hand)

BASA

12 x 5R x 2

ZEM-E-S - 3

81K060

41K060

250

D_W = ball diameter

Category

Size

Part number

Load ratings³⁾

Linear speed²⁾

= number of ball track turns

d0 x P x Dw - i

dyn. C

stat. C₀

v_max

(N)

(m/min)

8 x 2.5R x 1.588 - 3

R1532 230 02

2,640

2,800

8 x 5R x 1.588 - 3

R1532 260 02

2 500

2 650

12 x 2R x 1,2 - 4 ¹⁾

R1532 422 01

2,690

4,160

12 x 5R x 2 - 3

R1532 460 32

4,560

5,800

12 x 5R x 2 - 3 ¹⁾

R1532 462 25

4,560

5,800

12 x 10R x 2 - 2

R1532 490 22

3,000

3,600

12 x 10R x 2 - 2 ¹⁾

R1532 492 00

3,000

3,600

1) ZEM-E-K /

nuts

for Rexroth modules and drive units

2) See

“Characteristic speed d₀ · n” on page 141 and critical speed n_cr on page 176

3) The load ratings are valid for tolerance grade T5 only.

For other tolerance grades, please take into account the correction factor f_ac on page 141.

L₁₁

L₆

T₁

L₇

Lube port

Size

(mm)

Mass

d₀ x P x D_w - i

d₁

d₂

D₁

D₄

L₆

L₇

L₁₁

T₁

±0.1

+0.2

+0.1

(kg)

8 x 2.5R x 1.588 - 3

7.5

6.3

16.0

5.00

3.5

1.8

0.02

8 x 5R x 1.588 - 3

7.5

6.3

23.5

7.75

3.5

1.8

0.04

12 x 2R x 1.2 - 4 ¹⁾

11.7

10.8

19.0

5.50

3.5

1.8

0.03

12 x 5R x 2 - 3

11.4

9.9

28.0

8.00

3.5

3.0

0.06

12 x 5R x 2 - 3 ¹⁾

11.4

9.9

28.0

8.00

3.5

1.8

0.04

12 x 10R x 2 - 2

11.4

9.9

33.0

10.50

3.5

3.0

0.07

12 x 10R x 2 - 2 ¹⁾

11.4

9.9

33.0

10.50

3.5

1.8

0.05

Nuts, miniature series

Screw-in nut ZEV-E-S

Rexroth connection dimensions

With low-friction seal,

preload class: C0, C00, C1

Tolerance grade: T5, T7, T9

Ordering data:

d₀

= nominal diameter

= lead (R = right-hand)

BASA

12 x 5R x 2

ZEV-E-S - 3

81K060

41K060

250

D_W = ball diameter

Category

Size

Part number

Load ratings²⁾

Linear speed¹⁾

= number of ball track turns

dyn. C

stat. C₀

v_max

d₀ x P x D_w - i

(N)

(m/min)

12 x 5R x 2 - 3

R2542 430 05

4,560

5,800

30.0

12 x 10R x 2 - 2

R2542 430 15

3,000

3,600

60.0

1) See “Characteristic speed d₀ · n” on page 141 and “Critical speed n_cr” on page 176

2) The load ratings are valid for tolerance grade T3 and T5 only.

For other tolerance grades, please take into account the correction factor f_ac on page 141.

Lube port

Hole for assembly wrench

L₇

D₄

D₈

L₁₅

Size

(mm)

Mass

d₁

d₂

D₁

D₄

D₈

G₁

L₇

L₁₅

d₀ x P x D_w - i

h10

±0.3

(kg)

12 x 5R x 2 - 3

11.4

9.9

25.5

2.7

3.2

M20 x 1.0

8.5

0.09

12 x 10R x 2 - 2

11.4

9.9

25.5

2.7

3.2

M20 x 1.0

8.5

0.10

Screw Assemblies | Ball Screw Assemblies BASA

Nuts, Speed Series

Speed series

Speed series Ball Screw Assemblies are available with nominal diameters

of 20 - 32 mm, and leads of 25 - 64 mm.

The nut type is a single nut with flange.

The distinguishing feature of the speed series is its compact design.

Multi-start screws allow a higher load rating with a short nut. The oversquare

leads enable the realization of high traversing speeds.

Preload classes

Option

Preload class

Definition

Standard backlash

C00

Reduced backlash

High preload (single nut)

Moderate preload (single nut)

High preload (double nut)

Average preload (double nut)

Average preload (single nut)

See nut versions for allocation of the preload classes

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