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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 422 110 mm 280 mm 65 mm 523 kN 585 kN 20.3 kg
NU 322 ECP 110 mm 240 mm 50 mm 530 kN 540 kN 10.3 kg
NU 322 ECML 110 mm 240 mm 50 mm 530 kN 540 kN 11.7 kg
NU 322 ECM 110 mm 240 mm 50 mm 530 kN 540 kN 11.6 kg
NU 322 ECJ 110 mm 240 mm 50 mm 530 kN 540 kN 10.6 kg
NU 2322 ECP 110 mm 240 mm 80 mm 780 kN 900 kN 16.9 kg
NU 2222 ECP 110 mm 200 mm 53 mm 440 kN 520 kN 6.68 kg
NU 2222 ECNML 110 mm 200 mm 53 mm 440 kN 520 kN 7.5 kg
NU 2222 ECML 110 mm 200 mm 53 mm 440 kN 520 kN 7.4 kg
NU 2222 ECJ 110 mm 200 mm 53 mm 440 kN 520 kN 6.73 kg
NU 222 ECP 110 mm 200 mm 38 mm 335 kN 365 kN 4.71 kg
NU 222 ECML 110 mm 200 mm 38 mm 335 kN 365 kN 5.25 kg
NU 222 ECM 110 mm 200 mm 38 mm 335 kN 365 kN 5.43 kg
NU 222 ECJ 110 mm 200 mm 38 mm 335 kN 365 kN 4.81 kg
NU 1022 ML 110 mm 170 mm 28 mm 146 kN 166 kN 2.37 kg
NJ 422 110 mm 280 mm 65 mm 523 kN 585 kN 20.7 kg
NJ 322 ECP 110 mm 240 mm 50 mm 530 kN 540 kN 10.3 kg
NJ 322 ECML 110 mm 240 mm 50 mm 530 kN 540 kN 11.6 kg
NJ 322 ECM 110 mm 240 mm 50 mm 530 kN 540 kN 11.9 kg
NJ 322 ECJ 110 mm 240 mm 50 mm 530 kN 540 kN 10.5 kg
NJ 2322 ECP 110 mm 240 mm 80 mm 780 kN 900 kN 16.9 kg
NJ 2322 ECML 110 mm 240 mm 80 mm 780 kN 900 kN 18.3 kg
NJ 2222 ECP 110 mm 200 mm 53 mm 440 kN 520 kN 6.72 kg
NJ 2222 ECML 110 mm 200 mm 53 mm 440 kN 520 kN 7.5 kg
NJ 2222 ECJ 110 mm 200 mm 53 mm 440 kN 520 kN 6.82 kg
NJ 222 ECP 110 mm 200 mm 38 mm 335 kN 365 kN 4.82 kg
NJ 222 ECML 110 mm 200 mm 38 mm 335 kN 365 kN 5.32 kg
NJ 222 ECM 110 mm 200 mm 38 mm 335 kN 365 kN 5.75 kg
NJ 222 ECJ 110 mm 200 mm 38 mm 335 kN 365 kN 4.94 kg
N 322 ECP 110 mm 240 mm 50 mm 530 kN 540 kN 10.2 kg
N 322 ECM 110 mm 240 mm 50 mm 530 kN 540 kN 11.5 kg
N 222 ECP 110 mm 200 mm 38 mm 335 kN 365 kN 4.79 kg
N 222 ECM 110 mm 200 mm 38 mm 335 kN 365 kN 5.53 kg
NUP 221 ECP 105 mm 190 mm 36 mm 300 kN 315 kN 4.19 kg
NUP 221 ECML 105 mm 190 mm 36 mm 300 kN 315 kN 4.73 kg
NU 421 M 105 mm 260 mm 60 mm 501 kN 570 kN 17.3 kg
NU 321 ECP 105 mm 225 mm 49 mm 500 kN 500 kN 8.5 kg
NU 321 ECML 105 mm 225 mm 49 mm 500 kN 500 kN 9.5 kg
NU 321 ECJ 105 mm 225 mm 49 mm 500 kN 500 kN 8.56 kg
NU 221 ECP 105 mm 190 mm 36 mm 300 kN 315 kN 3.96 kg