- New
SKF TUJ 55 TF 55 mm Take-Up Ball Bearing Unit
Processing time: 2-3 days
€80.05
(net)
Price for: 1pcs.
The SKF TUJ 55 TF 55 mm is supplied by simmering.pl for industrial maintenance, machinery service, conveyor systems and B2B customers throughout Poland and the European Union.
SKF TUJ 55 TF is a self-aligning take-up ball bearing unit for a 55 mm shaft, combining a cast iron take-up housing with an SKF YAR 211-2F insert bearing. The insert is secured directly to the shaft by set screws and features contact sealing, grease lubrication and an extended inner ring. Catalogue performance values include a 43.6 kN dynamic load rating, 29 kN static load rating, 1.25 kN fatigue load limit and 3,600 r/min limiting speed. The adjustable take-up design is particularly suitable for conveyors and other machinery requiring controlled shaft positioning or belt and chain tensioning.
What Is the SKF TUJ 55 TF?
SKF TUJ 55 TF is a self-aligning take-up ball bearing unit for a 55 mm shaft. It combines a cast iron take-up housing with an SKF YAR 211-2F insert bearing. The insert has an extended inner ring and is locked directly onto the shaft by set screws.
The take-up housing is designed for mounting in suitable take-up frames, allowing the bearing position to be adjusted for belt, chain or conveyor tensioning applications. SKF data for the YAR 211-2F insert confirms the 55 mm bore and 55.6 mm overall bearing width.
Technical Specifications
Manufacturer: SKF
Designation: TUJ 55 TF
Product type: Take-up ball bearing unit
Bearing unit design: Self-aligning
Insert bearing: YAR 211-2F
Shaft diameter d: 55 mm
Insert outside diameter D: 100 mm
Insert overall width B: 55.6 mm
Housing material: Cast iron
Shaft locking: Set screws
Bore type: Cylindrical
Lubrication: Grease
Relubrication: Yes
Sealing: Contact seals with additional flingers
Rolling elements: Balls
Bearing material: Bearing steel
The YAR 211-2F insert used in this unit is an SKF insert bearing based on a sealed deep groove ball bearing design and uses two set screws for shaft locking.
SKF TUJ 55 TF Load Ratings
The key catalogue performance values are:
Basic dynamic load rating C: 43.6 kN
Basic static load rating C0: 29 kN
Fatigue load limit Pu: 1.25 kN
Limiting speed: 3,600 r/min
These values correspond to the SKF YAR 211-2F insert bearing used in the TUJ 55 TF unit.
YAR 211-2F Insert Bearing
The YAR 211-2F is the bearing insert used in SKF TUJ 55 TF.
Its principal dimensions are:
Bore d: 55 mm
Outside diameter D: 100 mm
Inner ring width B: 55.6 mm
Outer ring width C: 25 mm
Distance s1: 33.4 mm
Insert bearing mass: approx. 1.05 kg.
The extended inner ring is secured directly to the shaft using two set screws, providing straightforward mounting without an adapter sleeve.
Set-Screw Shaft Locking
SKF TUJ 55 TF uses set-screw locking.
The two set screws located in the extended inner ring of the YAR 211-2F insert secure the bearing directly onto the 55 mm shaft. This locking method is suitable for applications with both constant and alternating directions of rotation.
Take-Up Housing Design
Unlike pillow block or flange units, a take-up bearing unit is designed to move within a compatible take-up frame.
This adjustable mounting arrangement makes it possible to change the shaft position and maintain the required tension in systems such as:
- belt conveyors,
- chain conveyors,
- material handling systems,
- industrial transmission systems,
- agricultural machinery,
- production equipment.
The TUJ configuration is therefore particularly relevant where bearing support and shaft-position adjustment must be combined in one assembly.
Self-Aligning Design
The YAR insert has a spherical outside surface that operates in the corresponding spherical seating of the housing.
This design enables the complete bearing unit to accommodate a limited amount of initial misalignment between the shaft and housing.
The self-aligning function simplifies installation but does not compensate for excessive shaft deflection or major alignment errors.
Sealing System
The 2F execution uses contact sealing with additional flingers on both sides.
The sealing arrangement helps:
- retain grease inside the bearing,
- protect the raceways and rolling elements,
- reduce contaminant ingress,
- improve protection in industrial environments.
SKF specifies contact sealing and grease lubrication for the YAR 211-2F insert.
Relubrication
The TUJ 55 TF bearing unit is designed for relubrication, allowing grease to be replenished during maintenance.
This is particularly useful in conveyor and industrial applications where operating conditions, contamination or duty cycles require periodic lubricant renewal.
Typical Applications
SKF TUJ 55 TF can be used in appropriately designed:
- belt conveyors,
- chain conveyors,
- conveyor tensioning systems,
- material handling equipment,
- agricultural machinery,
- packaging machinery,
- production lines,
- industrial drives,
- processing equipment.
Final selection should consider shaft load, rotational speed, operating temperature, contamination, lubrication and the geometry of the take-up frame.
How to Select an SKF TUJ 55 TF Replacement
For correct replacement identification, verify:
Designation: TUJ 55 TF
Shaft diameter: 55 mm
Unit type: Take-up bearing unit
Insert bearing: YAR 211-2F
Shaft locking: Set screws
Housing material: Cast iron
Dynamic load rating: 43.6 kN
Static load rating: 29 kN
Limiting speed: 3,600 r/min
The 55 mm shaft diameter alone is not sufficient to identify a direct replacement. The take-up housing dimensions and compatibility with the existing take-up frame should also be checked.
FAQ - Technical Questions
What shaft diameter is SKF TUJ 55 TF designed for?
It is designed for a 55 mm shaft.
Which bearing insert is used in TUJ 55 TF?
The unit uses an SKF YAR 211-2F insert bearing.
How is the bearing secured to the shaft?
The YAR 211-2F insert uses two set screws in its extended inner ring.
What is the dynamic load rating?
The basic dynamic load rating C is 43.6 kN.
What is the static load rating?
The basic static load rating C0 is 29 kN.
What is the limiting speed?
SKF specifies a limiting speed of 3,600 r/min for the YAR 211-2F insert with an h6 shaft tolerance.
Frequently Asked Questions from Engineers and Maintenance Technicians
Is SKF TUJ 55 TF a flange bearing unit?
No. It is a take-up bearing unit, designed for adjustable mounting in a suitable take-up frame.
Does TUJ 55 TF require an adapter sleeve?
No. The YAR 211-2F insert has a cylindrical bore and is locked directly onto the shaft using set screws.
Is TUJ 55 TF self-aligning?
Yes. The spherical outside surface of the insert bearing allows limited self-alignment within the housing.
Can TUJ 55 TF be relubricated?
Yes. The bearing unit is designed to permit relubrication during service.
Can the YAR 211-2F insert be replaced separately?
Yes, provided the housing is serviceable and the replacement insert is fully compatible with the original unit.
The SKF TUJ 55 TF 55 mm is supplied by simmering.pl for industrial maintenance, machinery service, conveyor systems and B2B customers throughout Poland and the European Union.
SKF TUJ 55 TF is a self-aligning take-up ball bearing unit for a 55 mm shaft, combining a cast iron take-up housing with an SKF YAR 211-2F insert bearing. The insert is secured directly to the shaft by set screws and features contact sealing, grease lubrication and an extended inner ring. Catalogue performance values include a 43.6 kN dynamic load rating, 29 kN static load rating, 1.25 kN fatigue load limit and 3,600 r/min limiting speed. The adjustable take-up design is particularly suitable for conveyors and other machinery requiring controlled shaft positioning or belt and chain tensioning.