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FK

Fixed Side-Round Type
(Inner Diameter: 4 - 30 mm)
The Support Unit is compactly designed to accommodate the space in the installation site. As the bearing is provided with an appropriately adjusted preload, the Support Unit can be assembled with a Ball Screw unit with no further machining.
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Days to Ship Clear
For Shaft O.D. (mm) Clear
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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
For Shaft O.D. (mm): 4
FK4
Days to Ship: 2 - 3 weeks*
For Shaft O.D. (mm): 5
FK5
Days to Ship: 2 - 3 weeks*
For Shaft O.D. (mm): 6
FK6
Days to Ship: 1 - 3 days
For Shaft O.D. (mm): 8
FK8
Days to Ship: 1 - 3 days
For Shaft O.D. (mm): 10
FK10
Days to Ship: 1 - 3 days
For Shaft O.D. (mm): 12
FK12
Days to Ship: 2 - 3 weeks*
For Shaft O.D. (mm): 15
FK15
Days to Ship: 1 - 3 days
For Shaft O.D. (mm): 20
FK20
Days to Ship: 1 - 3 days
For Shaft O.D. (mm): 25
FK25
Days to Ship: 2 - 3 weeks*
For Shaft O.D. (mm): 30
FK30
Days to Ship: 1 - 3 days
Included items FK4-FK8
Item No. Item name
Qty
Housing 1
Bearing 1 set
Set nut 1
Collar 2
Seal 1
Lock Nut 1
Hexagonal socket head set screw(with set piece) 1
Model No. Bearingjournaldiameterd L H F E D A PCD B Install method A Install method B d1 d2 h M T Bearingused Basic load rating Mass
L1 T1 L2 T2 Axial direction
Dynamic
Ca
Static permissible Rigidity
mm mm mm mm mm mm mm mm mm mm mm mm mm mm mm mm mm kN kN N/µm kg
FK44156917.5 18-0.006-0.017 3224255.536.543.46.54M2.610AC4‑12 (DF P5)0.931.1270.05
FK5516.5610.518.5 20-0.007-0.02 3426265.53.5753.46.54M2.611AC5‑14 (DF P5)11.24290.06
FK662071322 22-0.007-0.023628285.53.58.56.53.46.54M312AC6‑16 (DF P5)1.381.76350.08
FK882391426 28-0.007-0.02433535741073.46.54M31479M8A(DF P5)2.932.15490.15
Included items for FK10-FK30
Item No. Item name
Qty
Housing 1
Bearing 1 set
Set nut 1
Collar 2
Seal 2
Lock Nut 1
Hexagonal socket head set screw(with set piece) 1
Model No. Bearingjournaldiameterd L H F E D A PCD B Install method A Install method B d1 d2 h M T Bearingused Basic load rating Mass
L1 T1 L2 T2 Axial direction
Dynamic
Ca
Static permissible Rigidity
mm mm mm mm mm mm mm mm mm mm mm mm mm mm mm mm mm kN kN N/µm kg
FK101027101729.5 34-0.009-0.0255242427.558.564.584M3167000 equivalent (DF P5)6.083.1650.21
FK121227101729.5 36-0.009-0.0255444447.558.564.584M3197001 equivalent (DF P5)6.663.25880.22
FK151532151736 40-0.009-0.0256350521061285.59.56M3227002 equivalent (DF P5)7.641000.39
FK202052223050 57-0.01 -0.02985706881012146.61110M4307204 equivalent (DF P5)17.99.51701.09
FK252557273060 63-0.01 -0.0299880791310201791513M5357205 equivalent (DF P5)20.211.51901.49
FK303062303261 75-0.01 -0.0291179593111217181117.515M6407206 equivalent (DF P5)2816.31952.32
For more detailed specifications, please download the Product Catalog with the link in the Downloads section on this page.
Model Size
FK 4
FK 4
  5
  6
  8
  10
  12
  15
  20
  25
  30