RU

With Mounting Holes
Integrated Inner/Outer Ring
(Outer Dia. 70 - 295 mm)
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  • Roller
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
View specifications and model number coding
Inner Diameter Range (mm)
Inner Diameter (mm)
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Outer Diameter Range (mm)
Outer Diameter (mm)
See more
Dust Protection Seal
Radial Clearance
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  • Model No. Main dimensions Shoulder height Basic load rating Mass Mounting hole related
    Inner diameter
    d
    Outer diameter
    D
    Roller pitch circle diameter
    dp
    Width
    B
    Greasing hole
    d1

    rmin
    ds
    (max)
    Dh
    (min)
    Radial Inner ring Outer ring
    Dynamic
    rating
    C
    Static
    rating
    C0
    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