EKB 25TM41E / 28TM04U40N Sealed Deep Groove Ball Bearing | 25×60/56×18 mm | C3 Clearance

The EKB 25TM41E / 28TM04U40N is a sealed deep groove ball bearing with a stepped outer ring and a shallow circlip groove. It is made from GCr15 bearing steel with C3 internal clearance, and is used in automotive transmission and gearbox applications.

25TM41E and 28TM04U40N are listed as alternative references for the same bearing. Please confirm dimensions and the outer ring structure against your original bearing or drawing before ordering.

Product Specifications

Dimensions and specifications are based on the supplied product information. Confirm the original bearing or technical drawing before ordering.

Key Features

Special stepped outer ring. The outer ring has a 56 mm stepped diameter (4 mm step height) with a shallow circlip groove, designed for specific mounting and positioning in the gearbox housing.

GCr15 bearing steel. Rings and rolling elements are made from GCr15 bearing steel. Hardness and heat treatment are controlled per the applicable Chinese national standards.

C3 internal clearance. Supplied with C3 radial internal clearance, suitable for the specified operating conditions.

Double-sided sealing. Sealed on both sides to retain grease and keep out dust and moisture.

Custom grease available. Standard grease is supplied as default; different grease brands and filling quantities can be discussed based on the application.

Applications

The 25TM41E / 28TM04U40N is used in automotive and mechanical transmission applications:

• Automotive transmission systems

• Automotive gearbox assemblies

• Automotive drivetrain components

• Mechanical power transmission equipment

The stepped outer ring and C3 clearance make this bearing suitable for applications requiring specific mounting dimensions. Application compatibility should always be confirmed against the original bearing, equipment specifications or technical drawing.

Custom Bearing Solutions

Different equipment and operating environments may require different bearing configurations. Besides the standard specifications above, EKB can discuss:

• Grease brand and lubrication specifications

• Grease filling quantity

• Internal clearance requirements

• Seal configurations

• Noise and vibration requirements

• Hardness and heat treatment requirements

• Other customer-specific technical specifications

Customers can provide an original bearing, drawing, sample or technical specification for evaluation.

Quality Inspection

EKB has its own quality inspection personnel and measuring equipment. For products supplied through qualified partner factories, our team performs incoming re-inspection before shipment according to the agreed product specifications.

Inspection covers:

• Bore and outside diameter

• Bearing width and stepped outer ring dimensions

• Circlip groove and step height

• Appearance and sealing condition

• Other agreed technical requirements

Inspection records can be provided according to order requirements.

Packaging & Shipment

Anti-rust protection, individual packaging, cartons and pallet packing can be arranged according to order requirements. Neutral packaging is available. Product photographs and inspection images can be provided before shipment on request.

Related Bearing Products

Looking for other special-size or hard-to-find bearings?

View our 63/28-2RS-C3 non-standard deep groove ball bearing.

Not sure which bearing you need? Use our Bearing Identification Service — send the original part number, drawing or a clear photo.

Frequently Asked Questions

Are 25TM41E and 28TM04U40N the same bearing?
These two references are listed as alternative model designations for the same bearing. Confirm dimensions and outer ring structure against your original sample or drawing before ordering.

What are the dimensions?
25 mm bore × 60 mm outside diameter × 18 mm width, with a stepped outer ring diameter of 56 mm (4 mm step height).

What material is used?
GCr15 bearing steel. Hardness and heat treatment follow applicable Chinese national standards.

What clearance does this bearing have?
C3 internal clearance as standard.

Can the grease be customized?
Yes. Standard grease as default; different grease brands and filling quantities can be supplied on request.

Can you supply other automotive or non-standard bearings?
Yes. EKB supplies special-size bearings, hard-to-find models and mixed purchasing lists.

Request a Quote

Looking for 25TM41E, 28TM04U40N or a similar special-configuration bearing? Send us your required quantity, original part number, drawing or product photo. We will review the specifications and confirm the supply solution before quoting.

Contact EKB for a Quote