Ina Slewing Ring Bearing

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Ina Slewing Ring Bearing can be supplied as ungeared, or with gears on either the ID of the inner ring or the OD of the outer ring. Slewing rings may be small, but they help do some of the largest jobs in the business. From swing arm rotation on cranes to the platform on a wind turbine, slewing rings are an integral part of many machinated processes. 

Ina Slewing Ring Bearing is comprised of two rings, each of which contains a precision raceway that is induction hardened on the surface to a specified depth. Each ring is made from a medium carbon steel forging. Some Series bearings have raceways constructed in a four-point contact configuration, with 45° contact angles as standard. Other raceway configurations are available, such as crossed roller and eight-point contact. These other options are often considered in cases where very high loads or special stiffness requirements are needed.


Slewing Bearing for CB2900

30.2 12
Not Provided Pillow Blocks

Slewing Bearing for Unic UR500

44.1 mm 19.5 kN
200 °C 27 mm

Slewing Bearing for Komatsu Lw250m-2

16 mm 89 mm
25.7 kN 59.1 mm

Slewing Bearing for Soosan 736

Radial Standard
NS Hairyu-bu Grease Metric System

Slewing Bearing for Aichi D805

Flange Type [Steel] Steel
No Round Type

Slewing Bearing for Aichi 705

Flanged Pilot Type 15
Bearings with Housin Deep Groove Ball Bea

Slewing Bearing for Tadano Tmz300

Steel With Outer Ring
Flat Open End

Slewing Bearing Kato 35h-3

Steel Deep Groove Ball Bea
6001 1045 Carbon Steel

Crane Slewing Bearing Unic UR330

Bearing Steel Thick Wall
Standard Grease Cast Iron

Truck Crane Slewing Bearing Aichi D502/D501

Grade 0 Self-aligning ball
Cylindrical Bore Steel

Slewing Bearing for Maeda 370/380

34 mm 25.4 mm
36 mm 100 °C

Slewing Bearing for Truck Crane Dongyang Ss1926

Standard H