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Single Row Cylindrical Roller Bearings

ZHIO® cylindrical roller bearings have many designs, dimension series and sizes. The majority is single row bearings with a cage. Single and double row full complement bearings (without cage) complete the ZHIO® standard assortment for general engineering. Bearings with a cage can accommodate heavy radial loads and operate at high speeds. Full complement cylindrical roller bearings are suitable for very heavy radial loads at moderate speeds.

The rollers of ZHIO® cylindrical roller bearings are key components. Their geometry, the so-called logarithmic profile, provides an optimum stress distribution in the contact zones in the bearing. Their surface finish maximizes lubricant film formation and optimizes rolling motion of the rollers. The benefits derived from this compared with traditional designs include enhanced operational reliability and a greater insensitivity to misalignment.

The range of ZHIO® cylindrical roller bearings comprises the basic types.
ZHIO® single row cylindrical roller bearings, caged, mainly of the NU, NJ, NUP and N designs.
ZHIO® double row cylindrical roller bearings, caged, mainly of the NNUand NN designs.
ZHIO® single row full complement cylindrical roller bearings, mainly of the NCF and NJG designs.
ZHIO® double row full complement cylindrical roller bearings, mainly of the NNF design.

ZHIO® cylindrical roll bearings have the following design features:
1. Optimized design in ribs and rollers to enhance the axial load capacity
2. Optimized design in the geometric surface between rollers and raceway to balance the radial load distribution
3. Limit the width of raceway undercut, increase the contact area between raceway and rollers and enhance the radial load capacity
4. High standard material, strictly control the element content, e.g. Ti<30ppm
5. Low noise design, reaches to V1 grade noise level, contributes to the quieter running of automobile engine and gearbox.

Dimension(mm) Radial Load
Model inside Outside Height Dynamic Static Maximum Speed Weight
NJ 230 ECM 150 mm 270 mm 45 mm 510 kN 600 kN 11.8 kg
NJ 230 ECJ 150 mm 270 mm 45 mm 510 kN 600 kN 10.5 kg
NJ 2230 ECM 150 mm 270 mm 73 mm 735 kN 930 kN 19.2 kg
NJ 1030 ML 150 mm 225 mm 35 mm 228 kN 290 kN 5.05 kg
NUP 328 ECML 140 mm 300 mm 62 mm 780 kN 830 kN 21.8 kg
NUP 328 ECM 140 mm 300 mm 62 mm 780 kN 830 kN 23.5 kg
NUP 328 ECJ 140 mm 300 mm 62 mm 780 kN 830 kN 20 kg
NUP 2328 ECML 140 mm 300 mm 102 mm 1200 kN 1430 kN 37.1 kg
NUP 228 ECML 140 mm 250 mm 42 mm 450 kN 510 kN 9.82 kg
NUP 228 ECM 140 mm 250 mm 42 mm 450 kN 510 kN 9.82 kg
NUP 228 ECJ 140 mm 250 mm 42 mm 450 kN 510 kN 8.45 kg
NUP 2228 ECML 140 mm 250 mm 68 mm 655 kN 830 kN 15.6 kg
NU 328 ECML 140 mm 300 mm 62 mm 780 kN 830 kN 22 kg
NU 328 ECM 140 mm 300 mm 62 mm 780 kN 830 kN 22.5 kg
NU 328 ECJ 140 mm 300 mm 62 mm 780 kN 830 kN 19.6 kg
NU 2328 ECML 140 mm 300 mm 102 mm 1200 kN 1430 kN 35.9 kg
NU 228 ECML 140 mm 250 mm 42 mm 450 kN 510 kN 9.24 kg
NU 228 ECM 140 mm 250 mm 42 mm 450 kN 510 kN 9.41 kg
NU 228 ECJ 140 mm 250 mm 42 mm 450 kN 510 kN 8.54 kg
NU 2228 ECML 140 mm 250 mm 68 mm 655 kN 830 kN 15 kg
NU 1028 ML 140 mm 210 mm 33 mm 204 kN 255 kN 4.07 kg
NU 1028 M 140 mm 210 mm 33 mm 200 kN 245 kN 3.93 kg
NJ 328 ECNML 140 mm 300 mm 62 mm 780 kN 830 kN 22.4 kg
NJ 328 ECML 140 mm 300 mm 62 mm 780 kN 830 kN 22.7 kg
NJ 328 ECM 140 mm 300 mm 62 mm 780 kN 830 kN 23.1 kg
NJ 328 ECJ 140 mm 300 mm 62 mm 780 kN 830 kN 20 kg
NJ 2328 ECML 140 mm 300 mm 102 mm 1200 kN 1430 kN 36.5 kg
NJ 228 ECML 140 mm 250 mm 42 mm 450 kN 510 kN 9.48 kg
NJ 228 ECJ 140 mm 250 mm 42 mm 450 kN 510 kN 8.6 kg
NJ 2228 ECML 140 mm 250 mm 68 mm 655 kN 830 kN 15.3 kg
NUP 326 ECML 130 mm 280 mm 58 mm 720 kN 750 kN 21.4 kg
NUP 2326 ECML 130 mm 280 mm 93 mm 1060 kN 1250 kN 29.5 kg
NUP 226 ECP 130 mm 230 mm 40 mm 415 kN 455 kN 6.72 kg
NUP 226 ECML 130 mm 230 mm 40 mm 415 kN 455 kN 7.84 kg
NUP 226 ECM 130 mm 230 mm 40 mm 415 kN 455 kN 7.47 kg
NUP 226 ECJ 130 mm 230 mm 40 mm 415 kN 455 kN 6.5 kg
NUP 2226 ECP 130 mm 230 mm 64 mm 610 kN 735 kN 10.7 kg
NUP 2226 ECML 130 mm 230 mm 64 mm 610 kN 735 kN 11.8 kg
NU 326 ECP 130 mm 280 mm 58 mm 720 kN 750 kN 16.1 kg
NU 326 ECML 130 mm 280 mm 58 mm 720 kN 750 kN 18 kg