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RU

With Mounting Holes
Integrated Inner/Outer Ring
(Outer Dia. 70 - 295 mm)
The integrated design of the unit’s inner and outer rings, with mounting holes on both rings, eliminates the need for a special flange or housing and enables easy installation. Mounting has virtually no effect on performance, which ensures stable, accurate rotation and torque. Can be used for both outer and inner ring rotation
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Shopping Options
Days to Ship Clear
Preload Clear
Inner Diameter (mm) Clear
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Outer Diameter (mm) Clear
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Dust Protection Seal Clear
Width (mm) Clear
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Bolt Used Clear
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Mounting Hole Spec - Inner Ring Clear
Mounting Hole Spec - Outer Ring Clear
In stock
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*Please contact THK if you need more than available quantity or out of stock items
Attributes Part Number Online Store
Unit Price (USD)
Quantity Days to Ship Item Total
Preload: No Preload
Width (mm): 12
Inner Diameter (mm): 20
Outer Diameter (mm): 70
Dust Protection Seal: With Seal
Bolt Used: M3
Mounting Hole Spec - Inner Ring: Tapped
RU42UUC0
Days to Ship: 1 - 3 days
Preload: Preloaded
Width (mm): 12
Inner Diameter (mm): 20
Outer Diameter (mm): 70
Dust Protection Seal: With Seal
Bolt Used: M3
Mounting Hole Spec - Inner Ring: Tapped
RU42UUCC0
Days to Ship: 1 - 3 days
Preload: No Preload
Width (mm): 15
Inner Diameter (mm): 35
Outer Diameter (mm): 95
Dust Protection Seal: With Seal
Bolt Used: M4
Mounting Hole Spec - Inner Ring: Tapped
RU66UUC0
Days to Ship: 1 - 3 days
Preload: Preloaded
Width (mm): 15
Inner Diameter (mm): 35
Outer Diameter (mm): 95
Dust Protection Seal: With Seal
Bolt Used: M4
Mounting Hole Spec - Inner Ring: Tapped
RU66UUCC0
Days to Ship: 1 - 3 days
Preload: No Preload
Width (mm): 15
Inner Diameter (mm): 55
Outer Diameter (mm): 120
Dust Protection Seal: With Seal
Bolt Used: M5
Mounting Hole Spec - Inner Ring: Tapped
RU85UUC0
Days to Ship: 1 - 3 days
Preload: Preloaded
Width (mm): 15
Inner Diameter (mm): 55
Outer Diameter (mm): 120
Dust Protection Seal: With Seal
Bolt Used: M5
Mounting Hole Spec - Inner Ring: Tapped
RU85UUCC0
Days to Ship: 1 - 3 days
Preload: No Preload
Width (mm): 22
Inner Diameter (mm): 80
Outer Diameter (mm): 165
Dust Protection Seal: With Seal
Bolt Used: M5
Mounting Hole Spec - Inner Ring: Counterbore
RU124UUC0G
Days to Ship: 1 - 3 days
Preload: Preloaded
Width (mm): 22
Inner Diameter (mm): 80
Outer Diameter (mm): 165
Dust Protection Seal: With Seal
Bolt Used: M5
Mounting Hole Spec - Inner Ring: Counterbore
RU124UUCC0G
Days to Ship: 3 - 4 weeks
Preload: No Preload
Width (mm): 22
Inner Diameter (mm): 80
Outer Diameter (mm): 165
Dust Protection Seal: With Seal
Bolt Used: M5
Mounting Hole Spec - Inner Ring: Tapped
RU124UUC0X
Days to Ship: 1 - 3 days
Preload: Preloaded
Width (mm): 22
Inner Diameter (mm): 80
Outer Diameter (mm): 165
Dust Protection Seal: With Seal
Bolt Used: M5
Mounting Hole Spec - Inner Ring: Tapped
RU124UUCC0X
Days to Ship: 1 - 3 days
Preload: No Preload
Width (mm): 25
Inner Diameter (mm): 90
Outer Diameter (mm): 210
Dust Protection Seal: With Seal
Bolt Used: M8
Mounting Hole Spec - Inner Ring: Counterbore
RU148UUC0G
Days to Ship: 1 - 3 days
Preload: Preloaded
Width (mm): 25
Inner Diameter (mm): 90
Outer Diameter (mm): 210
Dust Protection Seal: With Seal
Bolt Used: M8
Mounting Hole Spec - Inner Ring: Counterbore
RU148UUCC0G
Days to Ship: 1 - 3 days
Preload: No Preload
Width (mm): 25
Inner Diameter (mm): 90
Outer Diameter (mm): 210
Dust Protection Seal: With Seal
Bolt Used: M8
Mounting Hole Spec - Inner Ring: Tapped
RU148UUC0X
Days to Ship: 1 - 3 days
Preload: Preloaded
Width (mm): 25
Inner Diameter (mm): 90
Outer Diameter (mm): 210
Dust Protection Seal: With Seal
Bolt Used: M8
Mounting Hole Spec - Inner Ring: Tapped
RU148UUCC0X
Days to Ship: 1 - 3 days
Preload: No Preload
Width (mm): 28
Inner Diameter (mm): 115
Outer Diameter (mm): 240
Dust Protection Seal: With Seal
Bolt Used: M8
Mounting Hole Spec - Inner Ring: Counterbore
RU178UUC0G
Days to Ship: 1 - 3 days
Preload: Preloaded
Width (mm): 28
Inner Diameter (mm): 115
Outer Diameter (mm): 240
Dust Protection Seal: With Seal
Bolt Used: M8
Mounting Hole Spec - Inner Ring: Counterbore
RU178UUCC0G
Days to Ship: 1 - 3 days
Preload: No Preload
Width (mm): 28
Inner Diameter (mm): 115
Outer Diameter (mm): 240
Dust Protection Seal: With Seal
Bolt Used: M8
Mounting Hole Spec - Inner Ring: Tapped
RU178UUC0X
Days to Ship: 1 - 3 days
Preload: Preloaded
Width (mm): 28
Inner Diameter (mm): 115
Outer Diameter (mm): 240
Dust Protection Seal: With Seal
Bolt Used: M8
Mounting Hole Spec - Inner Ring: Tapped
RU178UUCC0X
Days to Ship: 1 - 3 days
Preload: No Preload
Width (mm): 35
Inner Diameter (mm): 160
Outer Diameter (mm): 295
Dust Protection Seal: With Seal
Bolt Used: M10
Mounting Hole Spec - Inner Ring: Counterbore
RU228UUC0G
Days to Ship: 1 - 3 days
Preload: Preloaded
Width (mm): 35
Inner Diameter (mm): 160
Outer Diameter (mm): 295
Dust Protection Seal: With Seal
Bolt Used: M10
Mounting Hole Spec - Inner Ring: Counterbore
RU228UUCC0G
Days to Ship: 1 - 3 days
Page
Model No. Main dimensions Shoulder height Basic load rating Mass Mounting hole related
Inner diameterd Outer diameterD Roller pitch circle diameterdp WidthB Greasing holed1 rmin ds(max) Dh(min) Radial Inner ring Outer ring
DynamicratingC StaticratingC0 PCD1 Mounting hole PCD2 Mounting hole
mm mm mm mm mm mm mm mm kN kN kg mm mm mm mm
RU42 20 70 41.5 12 3.1 0.6 37 47 7.35 8.35 0.29 28 6-M3 through 57 6-φ3.4 through φ6.5 counterbore depth 3.3
RU66 35 95 66 15 3.1 0.6 59 74 17.5 22.3 0.62 45 8-M4 through 83 8-φ4.5 through φ8 counterbore depth 4.4
RU85 55 120 85 15 3.1 0.6 79 93 20.3 29.5 1 65 8-M5 through 105 8-φ5.5 through φ9.5 counterbore depth 5.4
RU124 (G) 80 165 124 22 3.1 1 114 134 33.1 50.9 2.6 97 10-φ5.5 through φ9.5 counterbore depth 5.4< 148 10-φ5.5 through φ9.5 counterbore depth 5.4
RU124X 80 165 124 22 3.1 1 114 134 33.1 50.9 2.6 97 10-M5 through 148 10-φ5.5 through φ9.5 counterbore depth 5.4
RU148 (G) 90 210 147.5 25 3.1 1.5 133 162 49.1 76.8 4.9 112 12-φ9 through φ14 counterbore depth 8.6 187 12-φ9 through φ14 counterbore depth 8.6
RU148X 90 210 147.5 25 3.1 1.5 133 162 49.1 76.8 4.9 112 12-M8 through 187 12-φ9 through φ14 counterbore depth 8.6
RU178 (G) 115 240 178 28 3.1 1.5 161 195 80.3 135 6.8 139 112-φ9 through φ14 counterbore depth 8.6 217 12-φ9 through φ14 counterbore depth 8.6
RU178X 115 240 178 28 3.1 1.5 161 195 80.3 135 6.8 139 12-M8 through 217 12-φ9 through φ14 counterbore depth 8.6
RU228 (G) 160 295 227.5 35 6 2 208 246 104 173 11.4 184 12-φ11 through φ17.5 counterbore depth 10.8 270 12-φ11 through φ17.5 counterbore depth 10.8
RU228X 160 295 227.5 35 6 2 208 246 104 173 11.4 184 12-M10 through 270 12-φ11 through φ17.5 counterbore depth 10.8
RU297 (G) 210 380 297.3 40 6 2.5 272 320 156 281 21.3 240 16-φ14 through φ20 counterbore depth 13 350 16-φ14 through φ20 counterbore depth 13
RU297X 210 380 297.3 40 6 2.5 272 320 156 281 21.3 240 16-M12 through 350 16-φ14 through φ20 counterbore depth 13
For more detailed specifications, please download the Product Catalog with the link in the Downloads section of this product page.
Model Size Seals*1 Radial clearance*2 Symbol for inner ring thru hole Symbol for mounting hole orientation
RU 124 UU CC0 X G
RU 42 UU C0 : Positive Clearance No Symbol: For sizes 42 to 85, tapped-hole for inner ring No Symbol: The counterbore holes of the inner and outer rings face the same direction
  66   CC0 : Preload X: For sizes 124 to 228, tapped-hole for inner ring G: The counterbore holes of the inner and outer rings face opposite direction
  85
  124
  148
  178
  228
         
         

Note 1: Contamination protection seal UU is standard for Model RU
Note 2: Radial Clearance /media/specification/RU Seal.jpg

Model No. CC0 C0
Starting torque (N-m) Radial clearance (µm)
Min. Max. Min. Max.
RU42 0.1 0.5 0 25
RU66 0.3 2.2 0 30
RU85 0.4 3 0 40
RU124 1 6 0 40
RU148 1 10 0 40
RU178 3 15 0 50
RU228 5 20 0 60

The RU clearance CC0 is controlled by starting torque. Starting torque for clearance CC0 does not include seal resistace value. The above selections are Online Store standards. If you need a selection that differs from the standard, please contact us at [email protected]