Interference Fit Method - Renishaw RGH40 RESR40 Installation Manual

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Table Of Contents

Table of Contents

Enlarged version

Select a mounting option

(continued)

Taper mount method

Step 3

Taper mount method

Step 4

RGH40 RESR installation guide

Insert the next screws:

For RESR rings with 6, 9 or 12 mounting holes,

insert all the remaining M3 screws.

For RESR rings with 16 mounting holes,

insert 3 equally spaced M3 screws.

For RESR rings with 18 mounting holes,

insert 6 equally spaced M3 screws.

For RESR rings with 20 mounting holes,

insert 8 equally spaced M3 screws

(in four groups of two) between existing screws.

As described in Step 2, adjust all the screws

inserted thus far, so that the radial displacement at

each screw location is within ±5 µm.

Again, at this stage, the screws should only be

lightly tightened (less than 0.5 Nm).

NOTE: You may notice that the torque required to

achieve the radial displacement tolerance will be

slightly higher during step 3 than during step 2.

This is normal.

Insert screws into the remaining mounting holes.

Taper mount method

Step 5

Rotate the RESR ring, measuring the radial displacement at all of the

Diameter

Recommended

screw locations.

(mm)

torque range (Nm)

≤ 115

1.5 - 2.1

Tighten the screw with the lowest radial displacement so that it matches

the average radial displacement, whilst ensuring the maximum torque

150 to 255

0.8 - 1.1

specified in the table is not exceded.

300 to 413

0.5 - 0.7

≥ 417

1.2 - 1.7

Again, rotate the RESR ring and re-check the radial displacement at

all of the screw locations, tightening the screw with the lowest radial

displacement so that it matches the average.

Repeat this process until the radial displacement at all of the screw

locations is within ±3 µm and that all screw torques are within the

specified range.

Excessive tightening of screws can have a small effect on accuracy.

Please contact your local representative for more details.