521618 Wheel Bearing
The DUHUI Bearing 521618 is a single-row tapered roller bearing with a 65 mm inner diameter and 145 mm outer diameter. Designed for combined radial and axial loads, this automotive wheel bearing is commonly used in differential pinion applications on commercial vehicles including Mercedes-Benz OF 1318 . It matches OE specifications including FAG 521618, SKF 331075, and FERSA F15083, and serves as a direct replacement for workshops, distributors, and B2B buyers requiring a reliable bearing solution.
Technical Specifications
| Specification | Value / Detail |
|---|---|
| DH Code | DWB2456 |
| Part Number | 521618 |
| Product Type | Single Row Tapered Roller Bearing |
| Inner Diameter (d) | 65.00 mm (2.559 inch) |
| Outer Diameter (D) | 145.00 mm (5.709 inch) |
| Cone Width (B) | 36.00 mm (1.417 inch) |
| Cup Width (C) | 26.50 mm (1.043 inch) |
| Total Width (T) | 39.50 mm (1.555 inch) |
| Weight | 2.73 – 2.85 kg |
| Bearing Material | Bearing Steel |
| Cage Material | Steel Cage (Standard Design) |
| Dynamic Load Rating | 216.8 kN |
| Static Load Rating | 244.5 kN |
| Limiting Speed | 2,500 rpm |
Note: Dimensional data is based on manufacturer published specifications from FAG, SKF, and FERSA catalogs . Please verify measurements against your original bearing before ordering.
Important: All information on this page is for reference only. Please verify OE numbers, dimensions, and vehicle fitment against your original part before ordering. Contact us for fitment confirmation.
DH Code & OE Numbers & Reference Numbers
DH Code: DWB2456
OE Numbers:
521618
Reference Numbers (Interchange):
FAG: 521618, 331075/Q
SKF: 331075
FERSA: F15083
Vehicle Fitment
MERCEDES-BENZ OF 1318: Differential crown assembly (rear bearing)
Please verify OE number, dimensions and vehicle configuration before ordering.
Product Features
- Single-row tapered roller bearing design accommodates high radial and axial loads in one direction. The conical raceways allow these versatile bearings to support combined loads effectively .
- Separable cone and cup components simplify mounting, dismounting, and maintenance. The cone unit consists of an inner ring with cage and roller set, while the cup is the outer ring .
- Manufactured to OE specifications with bearing steel and a standard steel cage for durability and fatigue resistance .
- Direct interchange with multiple major brand equivalents including FAG 521618, SKF 331075, and FERSA F15083 .
- Available for product customization – logo, code, pattern, or words can be applied to the bearing or packaging.
Installation Notes
- Confirm inner diameter (65.00 mm) and outer diameter (145.00 mm) match your housing and shaft before installation.
- This is a single-row tapered roller bearing – these bearings must be mounted in mirror-image arrangement together with a second tapered roller bearing. Paired bearing sets can be applied in X, O, or tandem arrangements .
- Inspect the housing and shaft surfaces for wear or damage before installing new components.
- Apply even pressure when pressing the cone onto the shaft and the cup into the housing – never apply force directly through the rolling elements.
- Proper bearing preload is critical for tapered roller bearings – refer to the vehicle service manual for torque specifications.
- Pack the bearing with high-quality grease before installation if not pre-lubricated.
About DUHUI Bearing
Manufactured by DUHUI Bearing – an automotive bearing supplier established in Zhejiang, China, in 2003. DUHUI produces wheel bearings and automotive components to OE specifications. Contact us
