Hiwin MG Series User manual

Assembly Instructions
Linear Guideways
www.hiwin.de

HIWIN GmbH
Brücklesbünd 1
D-77654 Offenburg, Germany
Phone [phone]
Fax [phone]
[email protected]
www.hiwin.de
All rights reserved.
Complete or partial reproduction
is not permitted without our permission.
These assembly instructions are protected by copyright.
Any reproduction, publication in whole or in part, modifi-
cation or abridgement requires the written approval of
HIWIN GmbH.

Contents
3
Assembly instructions
Linear Guideways
GW-04-0-EN-1910-MA
Contents
1. General information ........................................................4
1.1 About these assembly instructions 4
1.2 Depictions used in these assembly instructions 5
1.3 Warranty and liability 6
1.4 Manufacturer’s details 6
1.5 Copyright 6
1.6 Product monitoring 6
2. Basic safety notices........................................................7
2.1 Intended use 7
2.2 Exclusion of liability in the event of alterations or improper use7
2.3 Qualified personnel 7
3. Product description.........................................................8
3.1 Order code of the linear guideways 8
3.2 Setup and operation of the linear guideway 10
3.3 Tolerances depending on accuracy class 10
3.4 Parallelism 11
3.5 Accuracy – height and width 12
4. Transport and installation..............................................13
4.1 Delivery state 13
4.2 Scope of delivery 13
4.3 Transport to the installation site 13
4.4 Storage 13
5. Assembly.....................................................................14
5.1 Preliminary work 14
5.2 Profile rail 14
5.3 Mounting holes cover 20
5.4 Blocks 30
6. Commissioning............................................................. 32
7. Maintenance ................................................................33
7.1 Cleaning 33
8. Lubrication................................................................... 34
8.1 Basic information on lubrication 34
8.2 Safety 34
8.3 Lubrication connections 35
8.4 Use of central lubrication system 41
8.5 Selecting a lubricant 41
8.6 HIWIN lubricants 44
8.7 Miscibility 44
8.8 Grease guns and lubrication adapters 45
8.9 Standard lubrication condition at delivery 46
8.10 Initial lubrication upon commissioning 47
8.11 Changing lubricant 48
8.12 Lubricant quantities 48
8.13 Relubrication 50
9. Disposal ......................................................................51
10. Procedure for incidents .................................................52
11. Accessories .................................................................53
11.1 Self-lubricating block 53
11.2 Additional assembly and disassembly tool 56
12. Appendix......................................................................57
12.1 Maximum speeds and accelerations for HIWIN linear guideways57
12.2 Tightening torques for fixing screws 57
12.3 Mounting tolerances 58
12.4 Technical data for blocks 66
12.5 Technical data for rails 79

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General information
Assembly instructions
Linear Guideways
GW-04-0-EN-1910-MA
1. General information
1.1 About these assembly instructions
These assembly instructions are intended for planners, developers and operators of systems who plan for and install linear
guideways as machine elements. They are also intended for persons who perform the following tasks:
|Transportation
|Assembly
|Retrofitting or upgrading
|Setup
|Commissioning
|Operation
|Cleaning
|Maintenance
|Troubleshooting and error elimination
|Shutdown, disassembly and disposal
Version Date Notes
04-0 October 2019 Complete revision of document
03-1 September 2018 Update
03-0 July 2017 Complete revision of document; addition of CG and QW series; taking out of MG-O series
02-5 January 2017 Update
02-4 May 2015 Update
02-3 January 2015 Update
02-2 October 2014 Change of TM —> PM, addition in Chapter „lubrication“
02-1 July 2014 Update of Chapter „Lubrication“
02-0 June 2014 Revision of Chapter „Lubrication“
01-0 March 2014 Initial creation of this document
Table 1.1 Version management
1.1.1 Version management
1.1.2 Requirements
We assume that
|operating personnel are trained in the safe operation practices for HIWIN linear guideways and have read and under-
stood these assembly instructions in full;
|maintenance personnel maintain and repair the HIWIN linear guideways in such a way that they pose no danger to
people, property or the environment.
1.1.3 Availability
These assembly instructions must remain constantly available to all persons who work with or on the HIWIN linear
guideways. The assembly instructions are also available at www.hiwin.de.

General information
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Assembly instructions
Linear Guideways
GW-04-0-EN-1910-MA
1.2 Depictions used in these assembly instructions
1.2.1 Instructions
Instructions are indicated by triangular bullet points in the order in which they are to be carried out.
Results of the actions carried out are indicated by ticks.
Example:
XPlace an eligible press-in block upright on the cap.
XWith a plastic hammer hit in the bolt cap through a central blow to the press-in block.
XWith plastic bolt caps a burr may form during pressing in.
XRemove this burr.
 Bolt cap has now been mounted.
1.2.2 Lists
Lists are indicated by bullet points.
Example:
Lubricants
|reduce wear
|protect against dirt
|…
1.2.3 Depiction of safety notices
Safety notices are always indicated using a signal word and sometimes also a symbol for the specific risk (see Section 1.2.4).
The following signal words and risk levels are used:
Imminent danger!
Noncompliance with the safety notices will result in serious injury or death!
XFollow the safety instructions!
DANGER!
Potentially dangerous situation!
Noncompliance with the safety notices runs the risk of serious injury or death!
XFollow the safety instructions!
WARNING!
Potentially dangerous situation!
Noncompliance with the safety notices runs the risk of slight to moderate injury!
XFollow the safety instructions!
CAUTION!
Potentially dangerous situation!
Noncompliance with the safety notices runs the risk of damage to property or environmental pollution!
XFollow the safety instructions!
ATTENTION!

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General information
Assembly instructions
Linear Guideways
GW-04-0-EN-1910-MA
1.2.4 Symbols used
The following symbols are used in these assembly instructions:
Table 1.2 Warning signs
1.2.5 Information
Warning of dangerous electrical voltage!
Substance hazardous to the environ-
ment!
Warning of crushing!
Warning of danger from suspended
loads!
1.3 Warranty and liability
The manufacturer’s “General conditions of sale and delivery” apply.
1.4 Manufacturer’s details
Address HIWIN GmbH
Brücklesbünd 1
D-77654 Offenburg, Germany
Phone +49 (0) 781 / 9 32 78 - 0
Technical customer service +49 (0) 781 / 9 32 78 - 77
Fax +49 (0) 781 / 9 32 78 - 90
Technical customer service fax +49 (0) 781 / 9 32 78 - 97
E-mail [email protected]
Website www.hiwin.de
Table 1.3 Manufacturer’s details
1.5 Copyright
These assembly instructions are protected by copyright. Any reproduction, publication in whole or in part, modification or
abridgement requires the written approval of HIWIN GmbH.
1.6 Product monitoring
Please inform HIWIN, the manufacturer of the linear guideways of:
|Accidents
|Potential sources of danger in the linear guideways
|Anything in these assembly instructions which is difficult to understand
Describes general information and recommendations.
NOTE
Warning of danger of cuts!

Basic safety notices
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Assembly instructions
Linear Guideways
GW-04-0-EN-1910-MA
2. Basic safety notices
Failure to comply with the following notices could be dangerous!
This chapter serves to ensure the safety of everyone working with the linear guideways and those who assemble, install,
operate, maintain or disassemble them. Non-compliance with the following information results in dangerous working
conditions.
XMake sure you comply with the following notices.
WARNING!
2.1 Intended use
The linear guideway is a linear guidance element that is used inside a machine or an automated system to guide a linear
movement.
The linear guideways are designed for installation and operation in horizontal and vertical positions. In the case of vertical
assembly, a suitable clamping or braking device must be provided in order to prevent unintended lowering of the load. The
linear guideways may only be used for the intended purpose as described.
2.2 Exclusion of liability in the event of alterations or improper use
No alterations may be made to the linear guideways that are not described in these assembly instructions. If it is necessary
to alter the design, please contact the manufacturer.
In the event of alterations or improper assembly, installation, commissioning, operation, maintenance or repair, the manufac-
turer shall assume no liability.
Only original parts from HIWIN may be used as spare parts and accessories. Spare parts and accessories not supplied by
HIWIN are not tested for operation with HIWIN linear guideways and may compromise operational safety. The manufacturer
shall accept no liability for damage caused as a result of using non-approved spare parts and accessories.
2.3 Qualified personnel
The linear guideways may only be assembled, integrated into higher-level systems, commissioned, operated and maintained
by qualified personnel. Qualified personnel are those who:
|have received appropriate technical training
and
|have received training from the machine operator concerning machine operation and the applicable safety guidelines,
and can assess the risks to be expected
and
|have read and understood these assembly instructions in their entirety
and
|have access to the Assembly Instructions at all times.

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Product description
Assembly instructions
Linear Guideways
GW-04-0-EN-1910-MA
3. Product description
3.1 Order code of the linear guideways
3.1.1 Order code for block (unmounted)
None: Standard
E2: Version with oil tank
Accuracy class:
C, H, P
Dust protection:
None: Standard (SS)
ZZ, DD, KK, SW, ZWX
Length of rail [mm]
Accuracy class:
C, H, P, SP, UP
Rail mounting:
R: From above
T: From below
Preload ID:
Z0, ZA, ZB
Block mounting:
A: From above
C: From below
HG W25 CCZ0 HZZ E2
HG R25 R1200 H
Series
Series
Block type:
W: Flange block
H: Square block
L: Low square block
Rail
Size
Size
Load type:
S: Medium load
C: Heavy load
H: Super heavy load
3.1.2 Order code for rail (unmounted)

Product description
9
Assembly instructions
Linear Guideways
GW-04-0-EN-1910-MA
Note:
1) The figure 2 is also a quantity statement, i.e. a part of the article described above consists of a pair of rails.
No figures are provided for individual linear guideways. By default multi-part rails are delivered with staggered butt joints.
3.1.3 Order code for linear guideway (fully assembled)
Rail mounting:
R: From above
T: From below
Number of blocks per rail
None: Standard
E2: Version with oil tank
SE: Steel end cap
Dust protection:
None: Standard (SS)
ZZ, DD, KK, SW, ZWX
Rails per matched set1)
Accuracy class:
H, P, SP, UP
HG W25 CC2R
1600 Z0 H2DD E2
Series
Length of rail [mm]
Block type:
W: Flange block
H: Square block
L: Low square block
Preload ID:
Z0, ZA, ZB
Size
Load type:
S: Medium load
C: Heavy load
H: Super heavy load
Block mounting:
A: From above
C: From above or below
Order code for linear guideway (fully assembled) – continuation

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Product description
Assembly instructions
Linear Guideways
GW-04-0-EN-1910-MA
3.2 Setup and operation of the linear guideway
A linear guideway enables linear movement with the aid of rolling elements. By using balls or rollers between the rail and
the block, a linear guideway can achieve an extremely precise linear movement. Compared to a conventional sliding guide,
the coefficient of friction is only one fiftieth. The high degree of efficiency and zero backlash make HIWIN linear guideways
extremely versatile.
The following figure shows the design and the components used.
3.3 Tolerances depending on accuracy class
Linear guideways are offered in different accuracy classes depending on the parallelism between block and rail, the height
accuracy H and the accuracy of width N.
Five accuracy classes are available for the HG, QH, EG, QE, CG, WE, QW, RG and QR series and three for the MG series.
C
H
A
D
B
N
Fig. 3.1 Exploded view of the design of a linear guideway
Table 3.1 Key for Fig. 3.1
Pos. Name Pos. Name
1Basic unit 4Grease nipple
2Rolling element 5Deflection system
3Wiper 6Profile rail
[1]
[2]
[5]
[3]
[4]
[6]
Fig. 3.2 Tolerances of the HIWIN linear guideways

Product description
11
Assembly instructions
Linear Guideways
GW-04-0-EN-1910-MA
Rail length [mm] Accuracy class
C H P
– 50 12 6 2.0
50 – 80 13 7 3.0
80 – 125 14 8 3.5
125 – 200 15 9 4.0
200 – 250 16 10 5.0
250 – 315 17 11 5.0
315 – 400 18 11 6.0
400 – 500 19 12 6.0
500 – 630 20 13 7.0
630 – 800 22 14 8.0
800 – 1,000 23 16 9.0
1,000 – 1,200 25 18 11.0
1,200 – 1,300 25 18 11.0
1,300 – 1,400 26 19 12.0
1,400 – 1,500 27 19 12.0
1,500 – 1,600 28 20 13.0
1,600 – 1,700 29 20 14.0
1,700 – 1,800 30 21 14.0
1,800 – 1,900 30 21 15.0
1,900 – 2,000 31 22 15.0
Unit: µm
3.4 Parallelism
Parallelism of stop surfaces D and B of block and rail and parallelism of top of block C to mounting surface A of rail. Ideal
linear guideway installation is required, as is a measurement in the centre of the block.
Rail length [mm] Accuracy class
C H P SP UP
– 100 12 7 3 2 2
100 – 200 14 9 4 2 2
200 – 300 15 10 5 3 2
300 – 500 17 12 6 3 2
500 – 700 20 13 7 4 2
700 – 900 22 15 8 5 3
900 – 1100 24 16 9 6 3
1100 – 1500 26 18 11 7 4
1500 – 1900 28 20 13 8 4
1900 – 2500 31 22 15 10 5
2500 – 3100 33 25 18 11 6
3100 – 3600 36 27 20 14 7
3600 – 4000 37 28 21 15 7
Unit: µm
Table 3.2 Tolerance of parallelism between block and rail – HG, QH, EG, QE, CG, WE, QW, RG and QR series
Table 3.3 Tolerance of parallelism between block and rail – MG series

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Product description
Assembly instructions
Linear Guideways
GW-04-0-EN-1910-MA
3.5 Accuracy – height and width
Height tolerance of H: Permissible absolute dimension variance of height H, measured between centre of screw-on
surface C and underside of rail A, with block in any position on the rail.
Height variance of H: Permissible variance of height H between several blocks on a rail, measured in the same rail posi-
tion.
Width tolerance of N: Permissible absolute dimension variance of width N, measured between centre of screw-on
surfaces D and B, with block in any position on the rail.
Width variance of N: Permissible variance of width N between several blocks on a rail, measured in the same rail posi-
tion.
Table 3.4 Height and width tolerances – HG, QH, EG, QE, CG, WE, QW, RG and QR series
Size Accuracy class Height tolerance
of H (TH)
Width tolerance
of N
Height variance
of H
Width variance
of N
15, 17, 20, 21 C (Normal) ±0.1 ±0.1 0.02 0.02
H (high) ±0.03 ±0.03 0.01 0.01
P (Precision) 0/–0.031)
±0.0152)
0/–0.031)
±0.0152)
0.006 0.006
SP (Super Precision) 0/–0.015 0/– 0.015 0.004 0.004
UP (Ultra Precision) 0/– 0.008 0/– 0.008 0.003 0.003
25, 27, 30, 35 C (Normal) ±0.1 ±0.1 0.02 0.03
H (high) ±0.04 ±0.04 0.015 0.015
P (Precision) 0/–0.041)
±0.022)
0/–0.041)
±0.022)
0.007 0.007
SP (Super Precision) 0/–0.02 0/– 0.02 0.005 0.005
UP (Ultra Precision) 0/– 0.01 0/– 0.01 0.003 0.003
45, 50, 55 C (Normal) ±0.1 ± 0.1 0.03 0.03
H (high) ±0.05 ±0.05 0.015 0.02
P (Precision) 0/–0.051)
±0.0252)
0/–0.051)
±0.0252)
0.007 0.01
SP (Super Precision) 0/–0.03 0/– 0.03 0.005 0.007
UP (Ultra Precision) 0/– 0.02 0/– 0.02 0.003 0.005
65 C (Normal) ±0.1 ± 0.1 0.03 0.03
H (high) ±0.07 ±0.07 0.02 0.025
P (Precision) 0/–0.071)
±0.0352)
0/–0.071)
±0.0352)
0.01 0.015
SP (Super Precision) 0/–0.05 0/– 0.05 0.007 0.01
UP (Ultra Precision) 0/– 0.03 0/– 0.03 0.005 0.007
Unit: mm
1) Full assembled linear guideway
2) Unmounted linear guideway
Table 3.5 Height and width tolerances – MG series
Size Accuracy class Height tolerance
of H
Width tolerance
of N
Height variance
of H
Width variance
of N
05, 07, 09,
12, 15
C (Normal) ±0.04 ±0.04 0.03 0.03
H (high) ±0.02 ± 0.025 0.015 0.02
P (Precision) ±0.01 ±0.015 0.007 0.01
Unit: mm

Transport and installation
13
Assembly instructions
Linear Guideways
GW-04-0-EN-1910-MA
4. Transport and installation
4.1 Delivery state
The following delivery states are possible for linear guideways:
|Fully assembled: blocks are already mounted on the rail, the block is secured on the profile rail with the transporta-
tion safety device.
|Unmounted: Blocks and rails are supplied separately
4.2 Scope of delivery
The contents of delivery vary depending on the ordered model, accessories, and options.
The linear guideways are precision products and must be treated with care. Impacts of any kind may damage
the product. The result may be compromised running precision and service life. Transport the packaged linear
guideway as close as possible to its installation site. Remove the packaging at this site only.
NOTE
4.3 Transport to the installation site
Danger from suspended loads or falling parts!
Lifting heavy loads may damage your health!
XOnly qualified personnel may assemble, install, and service the linear guideways!
XNote the mass when transporting the parts. Use suitable hoisting gear!
XObserve the applicable occupational health and safety regulations when handling suspended loads!
XBefore transport, secure the linear guideways against tilting!
WARNING!
Danger of impacts and crushing!
If no transportation safety device is used, the block can move uncontrolled on the profile rail and cause
injuries.
XOnly remove transportation safety device upon assembly!
CAUTION!
Risk of material damage!
Deflection during transport impairs the function and accuracy of the linear guideways.
XSupport long linear guideways during transport at several points!
ATTENTION!
4.3.1 Ambient conditions
Ambient temperature +5 °C to +40 °C
Installation site flat, dry, vibration-free
Atmosphere not corrosive, not explosive
Safety equipment to be provided by the operator
Possible safety equipment/measures:
|Personal protective equipment in accordance with UVV (German accident prevention regulations)
|Zero-contact protective equipment
|Mechanical protective equipment
4.4 Storage
XStore the linear guideways in their transport packaging.
XOnly store the linear guideways in dry, frost-free areas with a corrosion-free atmosphere.
XClean and protect used linear guideways axis systems before storage.

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Assembly
Assembly instructions
Linear Guideways
GW-04-0-EN-1910-MA
5.2 Profile rail
The mounting position depends on the requirements of the machine and the loading direction. The precision of the rails is
defined by the straightness and evenness of the installation surfaces, since the rail is attached to these while the screws are
being tightened. Rails that are not attached to an installation surface may have larger tolerances in terms of straightness.
Damage caused by tension on the linear guideway!
Linear guideways are extremely precise guides. Tension due to incorrect installation can result in premature failure of the
linear guideways.
XYou must observe the assembly instructions described in Chapter 5!
ATTENTION!
Please observe the assembly tolerances in Section 12.3.
NOTE
5. Assembly
5.1 Preliminary work
XOnly remove transport packaging directly before assembly.
XOnly remove the transportation safety device from the block directly before assembly of the rail.
XOnce the transportation safety device has been removed, keep the rail as horizontal as possible, since otherwise the
blocks may run on the rail in an uncontrolled manner.
XIf you have ordered a one-piece profile rail from the CG series with a cover strip, disassemble the cover strip first in
accordance with Section 5.3.4.
XAvoid getting the profile rail dirty during installation. Chippings and other items must be removed. All cleaning informa-
tion can be found in Section 7.1.
Danger of injury!
There is an increased risk of injury during assembly.
XDuring assembly and disassembly, the linear guideway must be transported horizontally. If this is not possible, a
suitable holding device must be installed to prevent the mounted blocks from coming off the rail!
XFor long linear guideways, a hoist may be used for assembly!
WARNING!
Health and environmental hazards!
Contact with lubricants may cause irritation, poisoning, allergic reactions, and damage to the environment.
XUse only suitable, non-hazardous agents. Note the manufacturer’s safety data sheets!
XEnsure proper disposal!
CAUTION!

Assembly
15
Assembly instructions
Linear Guideways
GW-04-0-EN-1910-MA
[1]
5.2.1 Identification of the reference edge of rails and blocks
The reference side of the rail is identified by arrows on the top of the rail. For very short rails, the reference side is identified
by an arrow on the front side of the rail.
5.2.2 Different types of linear guideways
R-rails are assembled using fixing screws from above; T-rails are assembled using fixing screws from below. The information
below describes the process of assembling the R-rail; the T-rail is assembled in the same way from below.
5.2.3 Cleaning the mounting surface
XRemove all dirt from the mounting surface.
XMounting holes and stop edge must be free of burrs. If necessary, remove burrs using an oil stone [1].
Fig. 5.1 Identification of the reference side of a rail
Fig. 5.2 Identification of the reference side of a short rail and of a PG series rail
Fig. 5.3 T-rail Fig. 5.4 R-rail
Fig. 5.5 Cleaning the mounting surface

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Assembly
Assembly instructions
Linear Guideways
GW-04-0-EN-1910-MA
B. Tensioning the profile rail with the machine bed
XTighten the terminal block’s allen set screws in order to press the profile rail firmly on to the machine’s stop edge.
XWorking in three steps, tighten the fixing screws on the profile rail using a torque spanner to the specified tightening
torque.
A list of optimum screw tightening torques can be found in Section 12.2 on page 57.
NOTE
Maintain the permissible tolerances for the mounting surfaces and mounting deviations of the relevant series, in
accordance with Sections 3.3, 3.4 and 3.5.
NOTE
 The profile rail has now been assembled.
The profile rails can be tensioned using a terminal block or vices.
NOTE
Tensioning the profile rail using a terminal block:
Tensioning the profile rail using vices:
XUse the vices to press the profile rail against the machine bed’s stop edge.
XTighten the profile rail’s fixing screws.
XRepeat this process for all fixing points.
XWorking in three steps, tighten all fixing screws on the profile rail using a torque spanner to the specified tightening
torque.
A. Aligning the profile rail.
XPlace the reference side of the profile (see Section 5.2.1) rail against the machine bed’s stop edge.
XLoosely attach the fixing screws.
5.2.4 Assembling the profile rail at a stop edge
Fig. 5.6 Aligning of the profile rail with the stop edge
Fig. 5.7 Tensioning using a terminal block

Assembly
17
Assembly instructions
Linear Guideways
GW-04-0-EN-1910-MA
5.2.4.1 Assembling the profile rail without a stop edge
XMount a block on the reference rail.
Mount the block in accordance with Section 5.4.2.
NOTE
XMount a dial gauge on the block.
XAlign the dial gauge with a reference edge.
XMove the block a few centimetres along the reference edge in order to align the profile rail.
XTighten the profile rail’s fixing screws.
XRepeat this process for all fixing points.
XTighten the fixing screws using a torque spanner to the specified tightening torque.
The reference edge should stretch from the beginning to the very end of the machine bed so that the profile rail
can be aligned across the entire length of the machine bed.
NOTE
Fig. 5.8 Tensioning using vices
A list of optimum screw tightening torques can be found in Section 12.2 on page 57.
NOTE
 The profile rail has now been assembled.
A list of optimum screw tightening torques can be found in Section 12.2 on page 57.
NOTE
 The profile rail has now been assembled.
Fig. 5.9 Block with mounted dial gauge

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Assembly
Assembly instructions
Linear Guideways
GW-04-0-EN-1910-MA
5.2.5 Mounting the profile rail on the follow-on side
5.2.5.1 Requirements
A reference rail must be mounted.
A block is mounted on the reference rail.
XMove the block that the dial gauge is mounted on, gradually over the reference rail.
XTighten the fixing screws of the follow-on rail one after the other, working from one end of the guideway to the other.
XTighten the fixing screws using a torque spanner to the specified tightening torque.
A list of optimum screw tightening torques can be found in Section 12.2 on page 57.
 The follow-on rail is mounted and aligned parallel with the reference rail.
NOTE
Fig. 5.10 Scanning and aligning the follow-on rail with the reference rail
Fig. 5.11 Plate mounted on the block
5.2.5.2 Aligning the follow-on rail with a reference rail using a dial gauge
XPlace the dial gauge on the mounted block of the aligned reference rail.
XAttach the dial gauge sensor to the follow-on rail.
5.2.5.3 Aligning the follow-on rail with a reference rail using a plate
XMount a plate on two blocks on the aligned reference rail.
XMount the other side of the plate on two blocks on the follow-on rail to be aligned.
 This setup results in the second rail being positioned in parallel.
XGradually move the plate over the rails.

Assembly
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Assembly instructions
Linear Guideways
GW-04-0-EN-1910-MA
5.2.6 Assembly of jointed rails
Jointed (multi-part) rails must be assembled according to the markings applied. The joints of each section are identified in a
consecutive alphabetical order as well as by the rail/pair number so that each rail section can be clearly assigned.
Each joint has a printed label on the top side of the rail. The printing provides aid for the initial assembly and can be removed
at any time using a suitable cleaning agent (e.g. ethyl alcohol). For jointed multi-part rails, the word “Paar” must also be
provided in addition to the rail number.
For paired multi-part rails, the butt joints should be staggered.
Fig. 5.12 Identification of jointed multi-part rails
Fig. 5.13 Identification of jointed multi-part paired rails
Fig. 5.14 Configuration of jointed multi-part rails
Section 1
Joint a Joint b
Rail
1
Rail
2
Section 2 Section 3
Schiene 1a Schiene 1a Schiene 1b Schiene 1b
Schiene 2a Schiene 2a Schiene 2b Schiene 2b
Teilstück 1
Stoß a Stoß b
Pair
1
Rail
1
Pair
1
Rail
2
Teilstück 2 Teilstück 3
Paar 1 1a Paar 1 1a Paar 1 1b Paar 1 1b
Paar 1 2a Paar 1 2a Paar 1 2b Paar 1 2b
Pair
2
Rail
1
Pair
2
Rail 2
Paar 2 1a Paar 2 1a Paar 2 1b Paar 2 1b
Paar 2 2a Paar 2 2a Paar 2 2b Paar 2 2b
Butt joints staggered
P/2 P/2
P P
XTighten the fixing screws of the follow-on rail one after the other, working from one end of the guideway to the other.
XTighten the fixing screws using a torque spanner to the specified tightening torque.
A list of optimum screw tightening torques can be found in Section 12.2 on page 57.
 The follow-on rail is mounted and aligned parallel with the reference rail.
NOTE

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Assembly
Assembly instructions
Linear Guideways
GW-04-0-EN-1910-MA
5.3 Protection of the mounting holes
To protect the block from soiling and to protect the dust protection sealing lips, the profile rails’ mounting holes must be
closed using cover caps (in the case of R-rails, fixing is carried out from above). The type of cover depends on the environ-
mental and operating conditions: plastic, steel or brass cover caps, or a cover strip, may be used. Plastic cover caps are
mounted as described in Section 5.3.1.2. Steel and brass cover caps are pressed in using an assembly tool as described in
Section 5.3.1.3. Cover strips are mounted as described in Section 5.3.2.
XPlace the plastic cover cap centrally on the bore.
XEnsure parallelism between the top of the rail and the top of the cover cap.
XPlace an eligible press-in block upright on the cap
XWith a plastic hammer hit in the cover cap through a central blow to the press-in block.
XIf the cap is not yet fully pressed in, repeat the procedure until the cap is flush with the rail top.
Fig. 5.15 Positioning of the plastic cover cap
Fig. 5.16 Pressing in of the plastic cover cap with the
help of a press-in block
Fig. 5.17 Fully assembled plastic cover cap
 The plastic cover cap has been mounted.
Damage caused by cover caps that have been incorrectly pressed in!
Pressing in the cover caps can result in a burr or result in the cover caps being pressed in too deep. This can later result
in damage to the block and dust protection.
XUse an oil stone to remove any burrs that have occurred!
XRemove any cover caps that have been pressed in too deep and press in new cover caps!
ATTENTION!
5.3.1 Bolt caps
5.3.1.1 Requirements
The profile rails are mounted and fixed in accordance with the descriptions in Section 5.2.4/5.2.5.
The profile rails are free of dust and oil (see Section 7.1).
5.3.1.2 Mounting of plastic cover caps