37431A/37625 109.538x158.75x23.02mm Imperial Tapered Roller Bearings

Product Overview

The 37431A/37625 is a single-row, inch-series tapered roller bearing consisting of a 37431A cone (inner ring assembly) and a 37625 cup (outer ring). With boundary dimensions of 109.538 mm bore × 158.75 mm outside diameter × 23.02 mm total width, it is engineered to carry combined radial and axial loads, with radial load predominating. The tapered geometry produces a defined contact angle, and under radial load an induced axial force is generated, so these bearings are typically mounted as opposed pairs to establish proper internal clearance or preload. The separable cone-and-cup construction allows the inner assembly and outer ring to be mounted independently, simplifying shaft assembly and inspection. Manufactured from case-carburized or through-hardened steel with a pressed steel cage, this bearing is an open (unsealed) design intended for oil or grease lubrication from the surrounding assembly.

Key Specifications

Note on data basis: Load ratings and speed limits vary by manufacturer and rating method. The ranges above consolidate published data from Schaeffler (K37431-A-37625), NTN (4T-37431/37625), and Timken (37431A/37625) to provide a realistic engineering envelope. Final acceptance values for a specific supply lot should be confirmed against the manufacturer’s inspection certificate.

Performance Features

• High radial and axial load capacity in a compact cross-section: The tapered roller geometry simultaneously supports radial loads and unidirectional axial loads, making a single bearing suitable for positions where a ball bearing would be undersized for the combined load spectrum.

• Separable cone-and-cup design: The inner ring assembly (cone with rollers and cage) can be mounted separately from the outer ring (cup), which simplifies shaft assembly, allows independent inspection, and supports adjustable mounting arrangements.

• Induced axial load management: Because radial load generates an induced axial force in tapered roller bearings, correct operation requires opposed mounting (facing pairs) to balance internal forces and set the desired running clearance or preload.

• Pressed steel cage: The roller-guided stamped steel cage retains and guides the rollers, contributing to stable roller positioning under dynamic load.

• Open configuration: No integral seals; the bearing relies on the assembly’s oil or grease circuit for lubrication, with direct access for relubrication where the housing design permits.

Application

The 37431A/37625 is a general-purpose inch-series tapered roller bearing used where a 109.538 mm bore and 158.75 mm outside diameter are required and combined radial/axial load capacity is needed. Documented application references include vehicle front and rear wheels, differential and pinion configurations, conveyor rolls, machine tool spindles, and trailer wheels. Broader industrial uses for this bearing type include transmissions, construction machinery, large agricultural machinery, railroad gear reduction units, and rolling mill roll-neck reductions. Its operating temperature range of −40 °C to +120 °C covers many automotive, agricultural, and general mechanical drive applications.

Ordering & Logistics

• Stock: 58 pcs

• Minimum order: 1 pc

• FOB price: US$50 – US$100 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

• Brand: As required (authorized brands only)

• Country of origin: China

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