30307X/2B 35x80x22.75mm Automotive Bearings Non-standard Tapered Roller Bearings

Product Overview

The 30307X/2B is a single-row, non-standard tapered roller bearing with dimensions of 35 mm bore × 80 mm outside diameter × 22.75 mm total width, designed for automotive drivetrain and wheel-end positions where combined radial and axial loads must be carried with high stiffness. The “X” and “2B” suffixes denote a non-standard internal geometry or variant within the 30307 dimensional envelope, meaning the internal design differs from a catalogue-standard 30307 while retaining the same mounting boundary dimensions. The bearing is manufactured from GCr15 chrome steel for rings and rollers, uses a pressed steel cage, and is supplied open (without seals) for external lubrication access. Its single-row tapered geometry produces a defined contact angle that simultaneously supports radial loads and axial loads in one direction, making it suitable for pinion shafts, wheel hubs, and differential assemblies where axial positioning under load is critical.

Key Specifications

Note on data basis: The 30307X/2B is a non-standard designation and does not appear in public manufacturer catalogues with a single unified data set. The load ratings, speed limits, and weight above are drawn from catalogue values for the standard 30307 family (including 30307, 30307-A, 30307-H, and SKF-equivalent listings) to provide a realistic engineering envelope. Because the X/2B internal variant may alter roller complement, contact angle, or heat treatment, final performance figures for the exact 30307X/2B should be confirmed against the supplier’s drawing or test certificate.

Performance Features

• Combined load capability in a compact envelope: The tapered roller geometry carries radial loads and unidirectional axial loads simultaneously, allowing a single bearing to manage the load spectrum typical of automotive pinion and wheel-end positions without requiring a separate thrust bearing.

• Non-standard internal variant for application-specific fit: The X/2B designation indicates a modified internal design within the standard 35 × 80 × 22.75 mm boundary dimensions, potentially involving altered roller profile, contact angle, or internal clearance to suit a specific automotive assembly requirement.

• C3 clearance: The greater-than-normal internal clearance accommodates interference fits on the shaft and housing and provides margin for thermal expansion during operation, supporting stable running under automotive thermal cycles.

• GCr15 chrome steel through-hardened construction: Rings and rollers are through-hardened for wear resistance and rolling-contact fatigue strength, consistent with the material specification used across the 30307 family.

• Open configuration: No integral seals; lubrication is supplied externally by the assembly’s oil or grease circuit, and the open design permits direct inspection and relubrication where access allows.

• Separable assembly: The cone (inner ring with rollers and cage) can be mounted separately from the cup (outer ring), simplifying shaft assembly and allowing independent inspection of components.

Application

The 30307X/2B is intended for automotive bearing positions requiring a 35 mm bore tapered roller bearing with combined load capacity. Specific application references for the 30307 dimensional family include front outer wheel bearings on Isuzu N-Series vehicles and differential pinion bearing positions on light commercial vehicles such as Freightliner/Mercedes-Benz Sprinter applications. The non-standard X/2B variant is likely specified where the standard 30307 internal geometry does not fully meet a particular OEM assembly’s stiffness, preload, or axial-positioning requirement. Typical service environments involve gear oil or grease lubrication, moderate shock loads from road input, and operating temperatures within the −30 °C to +120 °C range typical of the 30307 series.

Ordering & Logistics

• Stock: 57 pcs

• Minimum order: 1 pc

• FOB price: US$10 – US$50 per piece

• Payment: PayPal / Western Union / T/T (100% in advance)

• Delivery: 3–4 workdays after payment

• Shipping: DHL / FedEx / UPS / TNT

• Ports: Shanghai / Guangzhou

• Packing: Standard export packing

• OEM service: Available

• Brand: As required (authorized brands only)

• Country of origin: China

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