End Bearing Assembly for Annealing Lehr Rollers | Specifications & Verification

Product Specifications

Technical details and manufacturing context for End Bearing Assembly

Definition

The End Bearing Assembly is a critical component of a Float Glass Annealing Lehr Roller. It is mounted at the end of the roller shaft and serves to support the roller's weight, maintain precise axial and radial alignment, and minimize friction during rotation as the glass sheet travels through the controlled cooling zone of the annealing lehr. The assembly typically consists of a bearing (e.g., roller or ball bearing) housed within a robust casing or pillow block. It transfers the radial and axial loads from the rotating roller to the stationary lehr structure. Lubrication within the bearing reduces friction, allowing for smooth, continuous rotation essential for the uniform transport and annealing of the glass sheet without causing surface defects. The assembly is designed to accommodate specific shaft sizes and load requirements, with bore diameters ranging from 50 to 120 mm, outer diameters from 90 to 200 mm, and widths from 20 to 50 mm, per ISO 15. Dynamic load ratings range from 30 to 150 kN, and static load ratings from 20 to 100 kN, per ISO 76. Tolerance classes P0 to P6 per ISO 492 ensure precision, while radial clearances C3 to C4 per ISO 5753-1 accommodate thermal expansion. Operating temperatures range from -20 to 120°C, with special grease required above 120°C. Maximum speeds are 500 to 3000 rpm, depending on load and lubrication. Lubrication options include grease for low speed and oil for high speed. Sealing types include RS for contact and 2Z for non-contact. Materials include chrome steel for bearing rings and rolling elements, and cast iron or ductile iron for the housing. Bearing steel grades per GB/T 18254 include GCr15 to G20CrMo. Weight ranges from 1 to 15 kg. These values are directory reference ranges; verify model-specific values and standards with the legal manufacturer or supplier.

Working Principle

The End Bearing Assembly operates by housing a bearing that supports the roller shaft end. The bearing's inner ring fits onto the shaft, while the outer ring is secured in the housing. As the roller rotates, the bearing's rolling elements (balls or rollers) reduce friction between the rotating shaft and stationary housing. The housing transfers loads to the lehr structure. Lubrication (grease or oil) forms a film that separates moving parts, minimizing wear and heat. Proper sealing (RS or 2Z) prevents contamination and lubricant loss. The assembly maintains alignment and accommodates thermal expansion via radial clearance. This ensures smooth rotation, critical for uniform glass transport and annealing.

Common Materials

Chrome Steel (for bearing rings and rolling elements), Cast Iron or Ductile Iron (for housing/pillow block)

Technical Parameters

Parameter	Typical range	Notes & selection driver
Bore Diameter	50–120 mm	Matches roller shaft sizeISO 15
Outer Diameter	90–200 mm	Housing fitISO 15
Width	20–50 mm	Axial space constraintISO 15
Dynamic Load Rating	30–150 kN	Bearing lifeISO 76
Static Load Rating	20–100 kN	Peak loadsISO 76
Tolerance Class	P0–P6	Precision requirementISO 492
Radial Clearance	C3–C4	Thermal expansionISO 5753-1
Operating Temperature	-20–120 °C	Above 120°C requires special grease
Max Speed	500–3000 rpm	Depends on load and lubrication
Lubrication	Grease–Oil	Grease for low speed, oil for high speed
Sealing Type	RS–2Z	RS for contact, 2Z for non-contact
Material	GCr15–G20CrMo	Bearing steel gradeGB/T 18254
Weight	1–15 kg	Handling and installation

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Bearing Insert Part
The core rolling-element component that facilitates low-friction rotation between the inner ring (fitted to shaft) and outer ring (housed in block).

Material: Chrome Steel
Housing / Pillow Block
The stationary outer casing that houses the bearing, provides mounting points to the lehr structure, and often includes lubrication ports.

Material: Cast Iron or Ductile Iron
Seals Part
Prevents the ingress of dust, debris, and moisture while retaining lubricant within the bearing cavity.

Material: Synthetic Rubber (NBR/FKM) or Felt
Locking Device
Secures the bearing inner ring to the roller shaft, typically using an adapter sleeve, locking collar, or eccentric locking collar.

Material: Steel

Manufacturers of End Bearing Assembly

Manufacturer profiles associated with End Bearing Assembly.

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review · Page last updated 6 September 2026

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Frequently Asked Questions

What is the function of the End Bearing Assembly?

It supports the end of the annealing lehr roller, maintaining alignment and reducing friction during rotation, ensuring smooth transport of glass through the annealing lehr.

What materials are used in the End Bearing Assembly?

Chrome steel is used for bearing rings and rolling elements, while cast iron or ductile iron is used for the housing or pillow block.

What are the typical bore diameter and load ratings?

Bore diameter ranges from 50 to 120 mm, dynamic load rating from 30 to 150 kN, and static load rating from 20 to 100 kN, per ISO standards. Verify for your application.

How should I verify the correct End Bearing Assembly for my lehr?

Check shaft size, load requirements, operating temperature, speed, and lubrication. Confirm all parameters and standards with the legal manufacturer or supplier.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	Up to 0.5 MPa axial load, 0.2 MPa radial load
other spec:	Max rotational speed: 150 RPM, lubrication interval: 500 hours
temperature:	Ambient to 300°C (continuous), peak 350°C (short-term)

End Bearing Assembly

Product Specifications

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Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards