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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
NUP 2311 ECML 55 mm 120 mm 43 mm 232 kN 232 kN 2.58 kg
NUP 2211 ECPH 55 mm 100 mm 25 mm 114 kN 118 kN 0.81 kg
NUP 2211 ECP 55 mm 100 mm 25 mm 114 kN 118 kN 0.82 kg
NUP 2211 ECML 55 mm 100 mm 25 mm 114 kN 118 kN 0.92 kg
NUP 211 ECP 55 mm 100 mm 21 mm 96.5 kN 95 kN 0.68 kg
NUP 211 ECML 55 mm 100 mm 21 mm 96.5 kN 95 kN 0.72 kg
NUP 211 ECM 55 mm 100 mm 21 mm 96.5 kN 95 kN 0.78 kg
NUP 211 ECJ 55 mm 100 mm 21 mm 96.5 kN 95 kN 0.69 kg
NU 311 ECP 55 mm 120 mm 29 mm 156 kN 143 kN 1.44 kg
NU 311 ECML 55 mm 120 mm 29 mm 156 kN 143 kN 1.62 kg
NU 311 ECM 55 mm 120 mm 29 mm 156 kN 143 kN 1.72 kg
NU 311 ECJ 55 mm 120 mm 29 mm 156 kN 143 kN 1.48 kg
NU 2311 ECPH 55 mm 120 mm 43 mm 232 kN 232 kN 2.18 kg
NU 2311 ECP 55 mm 120 mm 43 mm 232 kN 232 kN 2.23 kg
NU 2311 ECML 55 mm 120 mm 43 mm 232 kN 232 kN 2.43 kg
NU 2211 ECPH 55 mm 100 mm 25 mm 114 kN 118 kN 0.79 kg
NU 2211 ECP 55 mm 100 mm 25 mm 114 kN 118 kN 0.79 kg
NU 2211 ECML 55 mm 100 mm 25 mm 114 kN 118 kN 0.88 kg
NU 2211 ECJ 55 mm 100 mm 25 mm 114 kN 118 kN 0.79 kg
NU 211 ECPH 55 mm 100 mm 21 mm 96.5 kN 95 kN 0.66 kg
NU 211 ECP 55 mm 100 mm 21 mm 96.5 kN 95 kN 0.66 kg
NU 211 ECML 55 mm 100 mm 21 mm 96.5 kN 95 kN 0.72 kg
NU 211 ECM 55 mm 100 mm 21 mm 96.5 kN 95 kN 0.77 kg
NU 211 ECJ 55 mm 100 mm 21 mm 96.5 kN 95 kN 0.69 kg
NU 1011 ECP 55 mm 90 mm 18 mm 65.5 kN 69.5 kN 0.39 kg
NJ 311 ECP 55 mm 120 mm 29 mm 156 kN 143 kN 1.5 kg
NJ 311 ECML 55 mm 120 mm 29 mm 156 kN 143 kN 1.65 kg
NJ 311 ECM 55 mm 120 mm 29 mm 156 kN 143 kN 1.76 kg
NJ 311 ECJ 55 mm 120 mm 29 mm 156 kN 143 kN 1.53 kg
NJ 2311 ECPH 55 mm 120 mm 43 mm 232 kN 232 kN 2.26 kg
NJ 2311 ECP 55 mm 120 mm 43 mm 232 kN 232 kN 2.26 kg
NJ 2311 ECML 55 mm 120 mm 43 mm 232 kN 232 kN 2.54 kg
NJ 2211 ECPH 55 mm 100 mm 25 mm 114 kN 118 kN 0.8 kg
NJ 2211 ECP 55 mm 100 mm 25 mm 114 kN 118 kN 0.81 kg
NJ 2211 ECML 55 mm 100 mm 25 mm 114 kN 118 kN 0.9 kg
NJ 2211 ECM 55 mm 100 mm 25 mm 114 kN 118 kN 0.91 kg
NJ 2211 ECJ 55 mm 100 mm 25 mm 114 kN 118 kN 0.81 kg
NJ 211 ECPH 55 mm 100 mm 21 mm 96.5 kN 95 kN 0.66 kg
NJ 211 ECP 55 mm 100 mm 21 mm 96.5 kN 95 kN 0.67 kg
NJ 211 ECML 55 mm 100 mm 21 mm 96.5 kN 95 kN 0.76 kg