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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 240 ECML 200 mm 360 mm 58 mm 880 kN 1060 kN 27 kg
NJ 240 ECM 200 mm 360 mm 58 mm 850 kN 1020 kN 26.9 kg
NJ 2340 ECML 200 mm 420 mm 138 mm 1980 kN 2800 kN 94 kg
NJ 2240 ECML 200 mm 360 mm 98 mm 1370 kN 1800 kN 43.9 kg
NUP 238 ECML 190 mm 340 mm 55 mm 800 kN 965 kN 22.6 kg
NUP 238 ECM 190 mm 340 mm 55 mm 800 kN 965 kN 23.8 kg
NU 338 ECM 190 mm 400 mm 78 mm 1140 kN 1500 kN 50 kg
NU 238 ECML 190 mm 340 mm 55 mm 800 kN 965 kN 22.3 kg
NU 238 ECM 190 mm 340 mm 55 mm 800 kN 965 kN 23.1 kg
NU 2338 ECML 190 mm 400 mm 132 mm 1830 kN 2550 kN 80.3 kg
NU 2238 ECML 190 mm 340 mm 92 mm 1220 kN 1600 kN 35.7 kg
NU 2238 ECM 190 mm 340 mm 92 mm 1220 kN 1600 kN 38 kg
NU 1038 ML 190 mm 290 mm 46 mm 400 kN 500 kN 10.9 kg
NU 1038 M 190 mm 290 mm 46 mm 400 kN 500 kN 10.9 kg
NJ 238 ECML 190 mm 340 mm 55 mm 800 kN 965 kN 22.2 kg
NJ 238 ECM 190 mm 340 mm 55 mm 800 kN 965 kN 23.3 kg
NJ 2338 ECML 190 mm 400 mm 132 mm 1830 kN 2550 kN 81.8 kg
NJ 2238 ECML 190 mm 340 mm 92 mm 1220 kN 1600 kN 36.3 kg
NJ 1038 ML 190 mm 290 mm 46 mm 400 kN 500 kN 11.1 kg
NU 336 ECM 180 mm 380 mm 75 mm 1020 kN 1290 kN 42.7 kg
NU 236 ECML 180 mm 320 mm 52 mm 720 kN 850 kN 18.5 kg
NU 236 ECM 180 mm 320 mm 52 mm 720 kN 850 kN 18.7 kg
NU 2336 ECML 180 mm 380 mm 126 mm 1610 kN 2240 kN 68.5 kg
NU 2236 ECML 180 mm 320 mm 86 mm 1100 kN 1430 kN 30.1 kg
NU 2236 ECM 180 mm 320 mm 86 mm 1100 kN 1430 kN 30.6 kg
NU 1036 ML 180 mm 280 mm 46 mm 380 kN 475 kN 10.4 kg
NJ 336 ECM 180 mm 380 mm 75 mm 1020 kN 1290 kN 43.9 kg
NJ 236 ECML 180 mm 320 mm 52 mm 720 kN 850 kN 18.5 kg
NJ 2336 ECML 180 mm 380 mm 126 mm 1610 kN 2240 kN 70.7 kg
NJ 2236 ECML 180 mm 320 mm 86 mm 1100 kN 1430 kN 29.9 kg
NJ 2236 ECM 180 mm 320 mm 86 mm 1100 kN 1430 kN 31.1 kg
NJ 1036 ML 180 mm 280 mm 46 mm 380 kN 475 kN 10.7 kg
NUP 234 ECM 170 mm 310 mm 52 mm 695 kN 815 kN 20 kg
NU 334 ECM 170 mm 360 mm 72 mm 952 kN 1180 kN 33.2 kg
NU 234 ECML 170 mm 310 mm 52 mm 695 kN 815 kN 17.6 kg
NU 234 ECM 170 mm 310 mm 52 mm 695 kN 815 kN 17.7 kg
NU 2334 ECML 170 mm 360 mm 120 mm 1450 kN 2040 kN 60.5 kg
NU 2234 ECML 170 mm 310 mm 86 mm 1060 kN 1340 kN 28.1 kg
NU 1034 ML 170 mm 260 mm 42 mm 320 kN 400 kN 7.99 kg
NU 1034 M 170 mm 260 mm 42 mm 320 kN 400 kN 8.07 kg