K Series (Drawn Cup Needle Roller)
Cage Type: Drawn Steel Cup (Shell Type)
Material: Bearing Steel (Gcr15)
Precision: P0, P6, P5
Structure: Open / Single Row / Full Complement
Bore Range: 3mm – 60mm
Outer Diameter: 8mm – 75mm
Application: Automotive transmissions, power tools, gear pumps, two-stroke engines
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K Series drawn cup needle roller bearings feature a thin-walled outer ring made from precision-drawn steel, providing maximum load capacity in minimal radial space. Without an inner ring, they are designed to run directly on hardened and ground shafts. Their compact design and high load-carrying capacity make them ideal for automotive transmissions, power tools, and gear pumps where space constraints demand slim-section bearing solutions.
Technical Specifications
| Bearing No. | Bore (d/Fw) mm | Outer Dia. (D) mm | Width (B/C) mm | Dyn. Load Cr (kN) | Stat. Load Cor (kN) | Ref. Speed (rpm) | Weight (kg) |
|---|---|---|---|---|---|---|---|
| K10×14×10 | 10 | 14 | 10 | 4.80 | 5.70 | 19000 | 0.005 |
| K12×16×10 | 12 | 16 | 10 | 5.10 | 6.30 | 17000 | 0.006 |
| K14×20×12 | 14 | 20 | 12 | 7.80 | 10.6 | 15000 | 0.009 |
| K15×21×12 | 15 | 21 | 12 | 8.30 | 11.4 | 14000 | 0.010 |
| K16×22×12 | 16 | 22 | 12 | 8.60 | 12.0 | 13000 | 0.010 |
| K18×24×12 | 18 | 24 | 12 | 9.30 | 13.4 | 12000 | 0.012 |
| K20×26×12 | 20 | 26 | 12 | 10.1 | 15.0 | 11000 | 0.013 |
| K22×28×12 | 22 | 28 | 12 | 11.0 | 16.6 | 10000 | 0.015 |
| K25×33×16 | 25 | 33 | 16 | 15.0 | 24.0 | 9000 | 0.028 |
| K28×36×16 | 28 | 36 | 16 | 16.3 | 27.0 | 8000 | 0.032 |
| K30×40×18 | 30 | 40 | 18 | 20.5 | 32.5 | 7500 | 0.044 |
| K35×45×20 | 35 | 45 | 20 | 24.0 | 40.5 | 6500 | 0.054 |
| K40×50×20 | 40 | 50 | 20 | 26.5 | 46.5 | 5500 | 0.065 |
| K45×55×25 | 45 | 55 | 25 | 33.5 | 62.0 | 5000 | 0.088 |
| K50×60×25 | 50 | 60 | 25 | 36.0 | 68.0 | 4500 | 0.098 |
