NA56424A Precision Class 3 Timken Tapered Roller Bearing Cone (0926)

NA56424A Precision Class 3 Timken Tapered Roller Bearing Cone (0926)

$ 139.74

Timken NA56424A (Precision Class 3) is a special/precision inner-ring (cone) for an imperial 56000-series tapered roller bearing assembly, typically paired with a 56650D double cup (TDO or similar double-row configuration).

Key dimensions

Bore (d): 4.2497 in (107.942 mm)
Cone width (B): 1.6250 in (41.275 mm)
Max shaft fillet radius (R): 0.14 in (3.5 mm)
Cone Net weight: 4.245 lbs.

NA56424A can pair with double cups corresponding to related 56000-series parts (e.g., those used with NA56393-SW). When used that way, subtract 0.2500 in (6.350 mm) from the catalog T-width values.

Related standard 56000-series ratings (for context)The closely related NA56425SW / 56650D (or 56425 / 56650) parts share the same series and cup and have published ratings of this order:

Dynamic radial C1 (1 million rev, two-row): ~88,600 lbf (394,000 N)
Dynamic radial C90 (90 million rev, one-row): ~13,200 lbf (58,700 N)
Dynamic thrust Ca90: ~11,200 lbf (50,000 N)
K factor: 1.18
e (ISO): 0.50
Y1 / Y2: ~1.36 / 2.02
Static radial C0 (typical single-row equivalent): ~79,700 lbf

Exact load ratings, stiffness, and speed limits for the Precision 3 NA56424A assembly can differ slightly because of the special cone width/bore and tighter class; confirm with a Timken catalog sheet or application engineer.

Other notes

Design: Tapered roller, typically TDO (double outer ring) or TNA-style double-row assembly, stamped-steel cage, open, uncoated steel.
Precision Class 3 applies to inch tapered rollers (comparable in intent to higher ABMA/ISO precision classes).
Applications: Precision machine-tool, spindle, or other applications needing tighter running accuracy than standard Class 2.

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Key stock

Part worked exactly as expected. Fast service and great communication.

Hi Don, we're thrilled to hear the key stock met your expectations! Thanks for your kind words about our service and communication. We appreciate your support! Kind Regards, Steve

A+ Thanks

Hi NILO, thank you for your fantastic review! We're thrilled you're satisfied with your purchase. Come back anytime!

Perfect product at a fair price!

I couldn't believe the quality of these steel balls. They totally exceeded my expectations and the piano stool I was restoring looked fabulous.

Hi Michael, we're thrilled to hear these steel balls made such a positive impact on your project! The grading of balls relates to their accuracy. Pretty much standard for us is the same as those you purchased which is Grade 25. That designates a ball that has an accuracy in total sphericity and diameter of 25/1,000,000 of an inch. Rolex has nothing on the bearing manufacturers when it comes to accuracy. Thanks for sharing your experience.

Great company.

Great company and products. I just miss read the part and order the wrong size. But called them directly and got someone on the phone to help me order the right parts for my r/c car. So thank you so much for being a local company that still has great customer service and staff.

Hi Jon, thank you for your kind words! We're glad we could help you get the right parts for your RC car. We appreciate your support and look forward to serving you again! Be Well! Steve

very satisfied with your prompt service

very prompt shipping, orders are always correct, all in all, just what you want from an internet purchase.

Hi Mr. Linn! Thank you so much for your kind words. We're thrilled to hear you're satisfied with our service and shipping. We're a brick and mortar store that sells online, so we cannot hide behind our keyboards. We do our best to treat our customers the way we wish to be treated. It's old-fashioned and we plan on staying that way. Looking forward to serving you again! Thanks! Steve

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NA56424A Precision Class 3 Timken Tapered Roller Bearing Cone (0926)

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NA56424A Precision Class 3 Timken Tapered Roller Bearing Cone (0926)

$ 139.74

Let customers speak for us