KOYO (JTEKT) NTA2233 — Technical Specifications

Brand: Koyo (JTEKT)
Product Type: Needle Roller Thrust Bearing
Category: Needle Roller Thrust Bearing (Roller & Cage Assembly)

Identification

• Item / Part Number: NTA2233
• Also known as: BMN.BT2233
• EAN / UPC: 605790205323
• Series: NTA
• Compatible Washer: TRA-2233
• Country of Origin: United States

Dimensions & Weight

• Bore (d): 34.93 mm (1.375 in / 1-3/8")
• Outside Diameter (D): 52.39 mm (2.0625 in)
• Overall Width (B): 1.98 mm (0.0781 in ≈ 5/64")
• Weight: 0.01 kg (approx. 0.02 lb)

Construction / Features

• Thrust Bearing Type: Roller & cage assembly
• Bearing Material: Steel
• Cage Material: Steel
• Seal Type: Unsealed / Open
• Function: Transmits thrust load between rotating parts while reducing friction; needle rollers spaced by cage for guided orbital tracking.

Load Ratings

• Basic Dynamic Axial Load Rating (Ca): 21.35 kN
• Basic Static Axial Load Rating (C0a): 103.20 kN
• Fatigue Load Limit (Cu): 10.5 kN

Speed

• Limiting Speed: 8000 rpm (min⁻¹)

Additional Dimensions (Reference)

• Dc1: 34.93 mm
• Dc: 52.375 mm
• Dw: 1.984 mm
• Eb: 37.08 mm
• Ea: 49.53 mm
• Dia. to clear O.D. (H): 53.19 mm

Washer (TRA-2233) — Reference Dimensions

• Washer designation: TRA-2233
• Washer d: 34.93 mm
• Washer d1: 52.37 mm
• Washer thickness h (max): 0.81 mm
• Washer thickness h (min): 0.76 mm
• Piloting S (max): 34.93 mm
• Piloting S (min): 34.85 mm
• Washer mass (ref.): 0.007 kg