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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
Outer Diameter (mm) Clear
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Dust Protection Seal Clear
Inner Diameter (mm) Clear
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Inner Diameter Range (mm) Clear
Outer Diameter Range (mm) Clear
Radial Clearance 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 Unit Price Quantity Days to Ship Item Total
Inner Diameter (mm): 20
Outer Diameter (mm): 70
Dust Protection Seal: With Seal
Radial Clearance: C0
RU42UUC0
Days to Ship: 2 - 3 weeks*
Inner Diameter (mm): 20
Outer Diameter (mm): 70
Dust Protection Seal: With Seal
Radial Clearance: CC0
RU42UUCC0
Days to Ship: 2 - 3 weeks*
Inner Diameter (mm): 35
Outer Diameter (mm): 95
Dust Protection Seal: With Seal
Radial Clearance: C0
RU66UUC0
Days to Ship: 2 - 3 weeks*
RU66UUCC0
Out of stock
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Inner Diameter (mm): 55
Outer Diameter (mm): 120
Dust Protection Seal: With Seal
Radial Clearance: C0
RU85UUC0
Days to Ship: 2 - 3 weeks*
Inner Diameter (mm): 55
Outer Diameter (mm): 120
Dust Protection Seal: With Seal
Radial Clearance: CC0
RU85UUCC0
Days to Ship: 2 - 3 weeks*
RU124UUC0X
Out of stock
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Inner Diameter (mm): 80
Outer Diameter (mm): 165
Dust Protection Seal: With Seal
Radial Clearance: CC0
RU124UUCC0X
Days to Ship: 2 - 3 weeks*
RU148UUC0X
Out of stock
Out of stock ? Contact us to place an order
Inner Diameter (mm): 90
Outer Diameter (mm): 210
Dust Protection Seal: With Seal
Radial Clearance: CC0
RU148UUCC0X
Days to Ship: 2 - 3 weeks*
RU178UUC0X
Out of stock
Out of stock ? Contact us to place an order
RU178UUCC0X
Out of stock
Out of stock ? Contact us to place an order
RU228UUC0X
Out of stock
Out of stock ? Contact us to place an order
RU228UUCC0X
Out of stock
Out of stock ? Contact us to place an order
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
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
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
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
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
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
RU 124 UU CC0 X
RU 42 UU C0 : Positive Clearance No Symbol: For sizes 42 to 85, tapped-hole for inner ring
  66   CC0 : Preload X: For sizes 124 to 228, tapped-hole for inner ring
  85
  124
  148
  178
  228

Note 1: Contamination protection seal UU is standard for Model RU Note 2: Radial Clearance

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 tossales@thk.com