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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 320 ECML 100 mm 215 mm 47 mm 450 kN 440 kN 8.69 kg
NJ 320 ECM 100 mm 215 mm 47 mm 450 kN 440 kN 8.75 kg
NJ 320 ECJ 100 mm 215 mm 47 mm 450 kN 440 kN 7.8 kg
NJ 2320 ECP 100 mm 215 mm 73 mm 670 kN 735 kN 12.2 kg
NJ 2320 ECML 100 mm 215 mm 73 mm 670 kN 735 kN 13.3 kg
NJ 2320 ECM 100 mm 215 mm 73 mm 670 kN 735 kN 13.3 kg
NJ 2320 ECJ 100 mm 215 mm 73 mm 670 kN 735 kN 12.1 kg
NJ 2220 ECP 100 mm 180 mm 46 mm 380 kN 450 kN 4.98 kg
NJ 2220 ECML 100 mm 180 mm 46 mm 380 kN 450 kN 5.32 kg
NJ 2220 ECM 100 mm 180 mm 46 mm 380 kN 450 kN 5.63 kg
NJ 2220 ECJ 100 mm 180 mm 46 mm 380 kN 450 kN 5.3 kg
NJ 220 ECP 100 mm 180 mm 34 mm 285 kN 305 kN 3.51 kg
NJ 220 ECML 100 mm 180 mm 34 mm 285 kN 305 kN 3.86 kg
NJ 220 ECM 100 mm 180 mm 34 mm 285 kN 305 kN 4.03 kg
NJ 220 ECJ 100 mm 180 mm 34 mm 285 kN 305 kN 3.55 kg
N 320 ECP 100 mm 215 mm 47 mm 450 kN 440 kN 7.5 kg
N 320 ECM 100 mm 215 mm 47 mm 450 kN 440 kN 8.55 kg
N 220 ECP 100 mm 180 mm 34 mm 285 kN 305 kN 3.44 kg
NUP 319 ECP 95 mm 200 mm 45 mm 390 kN 390 kN 6.3 kg
NUP 319 ECML 95 mm 200 mm 45 mm 390 kN 390 kN 7.52 kg
NUP 319 ECM 95 mm 200 mm 45 mm 390 kN 390 kN 7.75 kg
NUP 2319 ECML 95 mm 200 mm 67 mm 530 kN 585 kN 11 kg
NUP 2319 ECJ 95 mm 200 mm 67 mm 530 kN 585 kN 9.68 kg
NUP 2219 ECP 95 mm 170 mm 43 mm 325 kN 375 kN 4.02 kg
NUP 219 ECP 95 mm 170 mm 32 mm 255 kN 265 kN 2.9 kg
NUP 219 ECML 95 mm 170 mm 32 mm 255 kN 265 kN 3.24 kg
NUP 219 ECM 95 mm 170 mm 32 mm 255 kN 265 kN 3.33 kg
NU 319 ECP 95 mm 200 mm 45 mm 390 kN 390 kN 6.18 kg
NU 319 ECML 95 mm 200 mm 45 mm 390 kN 390 kN 7.37 kg
NU 319 ECM 95 mm 200 mm 45 mm 390 kN 390 kN 7.11 kg
NU 319 ECJ 95 mm 200 mm 45 mm 390 kN 390 kN 6.19 kg
NU 2319 ECP 95 mm 200 mm 67 mm 530 kN 585 kN 9.34 kg
NU 2319 ECML 95 mm 200 mm 67 mm 530 kN 585 kN 10.7 kg
NU 2319 ECJ 95 mm 200 mm 67 mm 530 kN 585 kN 9.27 kg
NU 2219 ECP 95 mm 170 mm 43 mm 325 kN 375 kN 3.89 kg
NU 2219 ECM 95 mm 170 mm 43 mm 325 kN 375 kN 4.23 kg
NU 2219 ECJ 95 mm 170 mm 43 mm 325 kN 375 kN 3.91 kg
NU 219 ECP 95 mm 170 mm 32 mm 255 kN 265 kN 2.86 kg
NU 219 ECML 95 mm 170 mm 32 mm 255 kN 265 kN 3.11 kg
NU 219 ECM 95 mm 170 mm 32 mm 255 kN 265 kN 3.32 kg