FAG NA4830A.JS3.C3.S1 Needle Roller Bearing 150x190x40mm Heat Stabilized NOS

FAG NA4830A.JS3.C3.S1 — Machined Needle Roller Bearing with Inner Ring

Brand: FAG (Genuine) Part Number: NA4830A.JS3.C3.S1 Condition: NOS — New Old Stock, factory-new and unused

IMPORTANT: This listing is for ONE (1) bearing. The photo may show multiple bearings for reference, but only one bearing will be shipped per purchase. Order the quantity you need.

WHAT IT IS

This is a large machined-ring needle roller bearing with an integrated inner ring, in a heat-stabilized specialty configuration. The "A" design variant features specific internal geometry; the "JS3" suffix denotes a controlled radial internal clearance falling within the C3 (greater than normal) range, manufactured to tighter tolerance; and the "S1" suffix indicates dimensional stabilization for sustained operation at elevated temperatures up to approximately 200°C.

Needle roller bearings deliver exceptionally high radial load capacity in a compact cross-section, making them essential where space is limited but radial loads are heavy. The included inner ring allows installation on shafts that have not been hardened or ground.

This is a specialty bearing, NOT a standard NA4830 — verify the JS3.C3.S1 specification matches your application requirements.

SPECIFICATIONS

• Bore (inner diameter): 150 mm
• Outer diameter: 190 mm
• Width: 40 mm
• Bearing type: Machined needle roller with inner ring (NA series)
• Internal clearance: JS3 (controlled C3-range, tighter tolerance)
• Heat stabilization: S1 (rated to approximately 200°C)
• Cage: Steel, machined
• Outer ring: Lubrication groove and oil hole standard
• Bearing weight: Approximately 7 lbs (3.2 kg)

COMMON APPLICATIONS

This bearing is used in heavy-duty industrial applications where high radial loads, compact cross-sections, and elevated operating temperatures coexist: heavy gearboxes and reducers, paper and steel mill machinery, hot-rolling equipment, automotive and truck transmissions in high-load configurations, agricultural and construction equipment, mining gearboxes, and high-temperature pump and compressor applications.

CROSS-REFERENCES / SUPERSEDES

The JS3.C3.S1 specification crosses between FAG and Torrington (Timken) under the same designation. Related cross-references: INA NA4830-XL-C3, SKF NA 4830, Koyo NA4830, IKO NA4830, NSK NA4830, NTN NA4830. Note that base NA4830 references without the JS3.S1 suffixes do NOT have the same controlled clearance and heat stabilization — they are not direct equivalents for applications that specifically require this spec.

CONDITION DETAILS

This is genuine FAG New Old Stock. The bearing is factory-new, unused, and in full working condition. Original packaging may show shelf wear, dust, or minor cosmetic flaws from long-term storage.

RETURNS

30-day return policy. If you're not satisfied for any reason, you may open a return request through eBay within 30 days of purchase.

Please verify this part number, dimensions, and full specification (including JS3 clearance and S1 heat stabilization) match your application before purchasing. If you have questions, message us before buying — we're glad to help!