Crossed Roller Bearing SRU Type (Integrated Inner / Outer Type)
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Crossed Roller Bearing Integrated Inner / Outer Type

SRU Type (Integrated Inner / Outer Type)

SRU Type (Integrated Inner / Outer Type)

Product Number : SRU


Inner Rings Integrated With Outer Rings

Axial Model no. Main size shoulder height basic load quantity PDF 2D(dxf) 3D
id
d
od
D
thick
T
LH
d1
chamfer
(r/min)

da

Dh
C
kN
C0
kN

kg
20 SRU42 20 70 12 3 0.5 36 46 7.3 8.33 0.28
35 SRU66 35 95 15 3 0.5 58 75 17.53 22.31 0.6
55 SRU85 55 120 15 3 0.5 78 94 20.31 29.55 1.1
80 SRU124(G) 80 165 22 3 1 115 133 33 50.85 2.61
21090SRU124X
90 SRU148(G) 90 210 25 3 1.5 134 161 49 76.83 4.95
SRU148X      
115 SRU178(G) 115 240 28 3 1.5 162 194 80.32 134.9 6.78
SRU178X
160 SRU228(G) 160 295 35 6.1 2 207 247 103.5 172.8 11.42
SRU228X
210 SRU297(G) 210 380 40 6.1 2.5 271 321 155.8 281.3 21.33
SRU297X
350 SRU445(G) 350 540 45 6.1 2.5 418 472 222.3 473.4 35.2
SRU445X

(note) SRU model can be choose lubricate nozzle see below chart if necessary, marked n at the end of the model.

 


Mounting hole specification
  inner ring   outer ring
PCD1 mounting hole PCD2 mounting hole
28 6-M3 penetrate 57 6-Ø3.5 penetrate,Ø6 hole depth 3.5
45 8-M4 penetrate 83 8-Ø4.5 penetrate,Ø8 hole depth 4.5
65 8-M5 penetrate 105 8-Ø5.5 penetrate,Ø10 hole depth 5.5
97 10-Ø5.5 penetrate,Ø10 hole depth 5.5 148 10-Ø5.5 penetrate,Ø10 hole depth 5.5
10-M5 penetrate
112 12-Ø9.0 penetrate,Ø14 hole depth 8.5 187 12-Ø9.0 penetrate,Ø14 hole depth 8.5
12-M8 penetrate
139 12-Ø9.0 penetrate,Ø14 hole depth 8.5 217 12-Ø9.0 penetrate,Ø14 hole depth 8.5
12-M8 penetrate
184 12-Ø11 penetrate,Ø18 hole depth 10.5 270 12-Ø11 penetrate,Ø18 hole depth 10.5
12-M10 penetrate
240 126-Ø14 penetrate,Ø20 hole depth 12.5 350 16-Ø14 penetrate,Ø20 hole depth 12.5
126-M12 penetrate
385 24-Ø14 penetrate,Ø20 hole depth 12.5 505 24-Ø14 penetrate,Ø20 hole depth 12.5
24-M12 penetrate
Types

Fixing holes have been set, the installation process no require flange and bracket, so it could obtain stable rotation accuracy and torque.

 

Features

 

  • High load capacity
  • Taking loads from all directions
  • High rigidity
  • Stable rotation accuracy
  • Easy to install and adjust.
  • Rapidly Z-axis lifting stage
Accuracy Specifications

Accuracy and dimensional tolerances of cross roller bearings are in accordance with the specifications shown in tables.

♦ Running accuracy for the inner rings of SRU models

Models Radial deflection of inner rings Axial deflection of inner rigns
Grade P5 Grade P4 Grade P2 Grade P5 Grade P4 Grade P2
SRU42 4 3 2.5 4 3 2.5
SRU66 5 4 2.5 5 4 2.5
SRU85 5 4 2.5 5 4 2.5
SRU124 5 4 2.5 5 4 2.5
SRU148 6 5 2.5 6 5 2.5
SRU178 6 5 2.5 6 5 2.5
SRU228 8 6 5 8 6 5
SRU297 10 8 5 10 8 5
SRU445 15 12 7 15 12 7
unit:µm


♦ Running accuracy for the outer rings of SRU models

Models Radial deflection of inner rings Axial deflection of inner rigns
Grade P5 Grade P4 Grade P2 Grade P5 Grade P4 Grade P2
SRU42 8 5 4 8 5 4
SRU66 10 6 5 10 6 5
SRU85 10 6 5 10 6 5
SRU124 12 8 5 12 8 5
SRU148 15 10 7 15 10 7
SRU178 15 10 7 15 10 7
SRU228 18 11 7 18 11 7
SRU297 20 13 8 20 13 8
SRU445 24 15 10 24 15 10
unit:µm

♦ Tolerance of bore diameter bearing

ID of bearings (d)
in metric units (mm)
Tolerance dm
Grade 0、P5、P4、P2 Grade ps5 Grade PS4
Grade PS2
Above Below Above Below Above Below Above Below
18 30 0 -10 0 -6 0 -5
30 50 0 -12 0 -8 0 -6
50 80 0 -14 0 -9 0 -7
80 120 0 -20 0 -10 0 -8
120 150 0 -24 0 -12 0 -9
150 180 0 -24 0 -12 0 -10
180 250 0 -30 0 -14 0 -12
250 315 0 -34 0 -17
315 400 0 -38 0 -22
400 500 0 -44
unit:µm

♦ Tolerance of outer diameter bearing

ID of bearings (d)
in metric units (mm)
Tolerance dm
 0、P5、P4、P2 Grade ps5 Grade PS4
Grade PS2
Above Below Above Below Above Below Above Below
30 50 0 -11 0 -7 0 -6
50 80 0 -13 0 -9 0 -7
80 120 0 -15 0 -10 0 -8
120 150 0 -18 0 -10 0 -9
150 180 0 -24 0 -12 0 -9
180 250 0 -30 0 -15 0 -10
250 315 0 -34 0 -18 0 -12
315 400 0 -40 0 -20 0 -15
400 500 0 -44 0 -23
unit:µm

 

♦ Tolerance of width for inner and outer rings of SRU models 

Models T tolerance
Above Below
 SRU42 0 -70
SRU66 0 -70
SRU85 0 -70
SRU124 0 -70
SRU148 0 -70
SRU178 0 -80
SRU228 0 -80
SRU297 0 -80
SRU445 0 -100 
unit:µm