TIMKEN 749/742 749-99401

Timken 749/742 Tapered Roller Bearing Set

Description

This is a Timken 749/742 single row tapered roller bearing set, consisting of the 749 cone assembly and the 742 cup. Manufactured in the USA, this bearing is designed to handle both radial and axial loads in one direction. Its high-quality steel construction and precision engineering ensure reliable performance and long service life in demanding industrial environments. The bearing is supplied in its original packaging.

Specifications

• Manufacturer: Timken
• Part Number (Set): 749/742
• Cone Number: 749
• Cup Number: 742
• Assembly Part Number: 749-99401
• Bore Diameter: 3.5000 in / 88.9 mm
• Cup Outer Diameter: 6.0000 in / 152.4 mm
• Total Width: 1.4375 in / 36.513 mm
• Type: Tapered Roller Bearing, Single Row

Label Info

• UPC: 053893651996
• Batch Code: 09C 22 =SN6

Application

Ideal for use in vehicle axles, industrial gearboxes, transmissions, and various other heavy-duty machinery where combined loads are present.

Country of Origin

Made in the USA.

CO2 Impact

By purchasing this reused bearing, you are contributing to a circular economy and have helped avoid approximately 3.8 kg of CO2 emissions associated with the production of a new part.

Availability

In stock and ready for immediate dispatch. Order now from spareparts2day for expert support and fast delivery.

FAQ

What is the correct mounting procedure for a tapered roller bearing like the 749/742?

Proper mounting is crucial. Always press on the ring being fitted – press the cone onto the shaft and the cup into the housing. Never apply force through the rollers, as this can damage the bearing. Use appropriate tools like a press or bearing heater.

Does this bearing require a specific type of lubrication?

Yes, lubrication is critical. For most industrial applications, a high-quality EP (Extreme Pressure) grease is recommended. The specific type and amount depend on the operating speed, load, and temperature. Always consult your machinery’s maintenance manual.

How do I correctly set the preload or end play for this bearing set?

Tapered roller bearings require precise setting of end play (clearance) or preload (interference). This is typically achieved using shims, spacers, or adjusting nuts. An incorrect setting can lead to premature failure. Refer to Timken’s engineering manuals or your equipment’s specifications for the exact procedure and values.

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Last Update: Friday, March 13, 2026