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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
NU 221 ECML 105 mm 190 mm 36 mm 300 kN 315 kN 4.39 kg
NU 221 ECJ 105 mm 190 mm 36 mm 300 kN 315 kN 4.1 kg
NU 1021 ML 105 mm 160 mm 26 mm 116 kN 137 kN 1.88 kg
NU 1021 M 105 mm 160 mm 26 mm 116 kN 137 kN 1.85 kg
NJ 321 ECP 105 mm 225 mm 49 mm 500 kN 500 kN 9.07 kg
NJ 321 ECML 105 mm 225 mm 49 mm 500 kN 500 kN 10.3 kg
NJ 321 ECJ 105 mm 225 mm 49 mm 500 kN 500 kN 8.73 kg
NJ 221 ECP 105 mm 190 mm 36 mm 300 kN 315 kN 4 kg
NJ 221 ECML 105 mm 190 mm 36 mm 300 kN 315 kN 4.67 kg
NJ 221 ECJ 105 mm 190 mm 36 mm 300 kN 315 kN 4 kg
N 321 ECP 105 mm 225 mm 49 mm 500 kN 500 kN 8.6 kg
N 221 ECP 105 mm 190 mm 36 mm 300 kN 315 kN 3.95 kg
NUP 320 ECML 100 mm 215 mm 47 mm 450 kN 440 kN 9.09 kg
NUP 320 ECJ 100 mm 215 mm 47 mm 450 kN 440 kN 8.1 kg
NUP 2320 ECML 100 mm 215 mm 73 mm 670 kN 735 kN 14.3 kg
NUP 2320 ECJ 100 mm 215 mm 73 mm 670 kN 735 kN 12.7 kg
NUP 2220 ECP 100 mm 180 mm 46 mm 380 kN 450 kN 4.8 kg
NUP 2220 ECML 100 mm 180 mm 46 mm 380 kN 450 kN 5.41 kg
NUP 220 ECP 100 mm 180 mm 34 mm 285 kN 305 kN 3.6 kg
NUP 220 ECML 100 mm 180 mm 34 mm 285 kN 305 kN 4 kg
NUB 220 ECJ 100 mm 180 mm 46 mm 285 kN 305 kN 3.67 kg
NU 320 ECP 100 mm 215 mm 47 mm 450 kN 440 kN 7.62 kg
NU 320 ECML 100 mm 215 mm 47 mm 450 kN 440 kN 8.54 kg
NU 320 ECM 100 mm 215 mm 47 mm 450 kN 440 kN 8.59 kg
NU 320 ECJ 100 mm 215 mm 47 mm 450 kN 440 kN 7.5 kg
NU 2320 ECP 100 mm 215 mm 73 mm 670 kN 735 kN 11.8 kg
NU 2320 ECML 100 mm 215 mm 73 mm 670 kN 735 kN 13.2 kg
NU 2320 ECM 100 mm 215 mm 73 mm 670 kN 735 kN 13.2 kg
NU 2320 ECJ 100 mm 215 mm 73 mm 670 kN 735 kN 11.9 kg
NU 2220 ECP 100 mm 180 mm 46 mm 380 kN 450 kN 4.75 kg
NU 2220 ECML 100 mm 180 mm 46 mm 380 kN 450 kN 5.25 kg
NU 2220 ECM 100 mm 180 mm 46 mm 380 kN 450 kN 5.48 kg
NU 2220 ECJ 100 mm 180 mm 46 mm 380 kN 450 kN 4.81 kg
NU 220 ECP 100 mm 180 mm 34 mm 285 kN 305 kN 3.46 kg
NU 220 ECML 100 mm 180 mm 34 mm 285 kN 305 kN 3.85 kg
NU 220 ECM 100 mm 180 mm 34 mm 285 kN 305 kN 3.98 kg
NU 220 ECJ 100 mm 180 mm 34 mm 285 kN 305 kN 3.48 kg
NU 1020 ML 100 mm 150 mm 24 mm 100 kN 114 kN 1.52 kg
NU 1020 M 100 mm 150 mm 24 mm 100 kN 114 kN 1.52 kg
NJ 320 ECP 100 mm 215 mm 47 mm 450 kN 440 kN 7.73 kg