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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
HJ 212 EC 60 mm 77.55 mm 10 mm 0.1 kg
HJ 311 EC 55 mm 77.5 mm 14 mm 0.19 kg
HJ 2311 EC 55 mm 77.5 mm 15.5 mm 0.19 kg
HJ 2211 EC 55 mm 70.8 mm 10 mm 0.085 kg
HJ 211 EC 55 mm 70.8 mm 9.5 mm 0.083 kg
HJ 410 50 mm 78.8 mm 14.5 mm 0.15 kg
HJ 310 EC 50 mm 71.4 mm 13 mm 0.15 kg
HJ 210 EC 50 mm 63.95 mm 9 mm 0.058 kg
HJ 409 45 mm 71.8 mm 13.5 mm 0.18 kg
HJ 309 EC 45 mm 64.4 mm 11.5 mm 0.11 kg
HJ 209 EC 45 mm 58.95 mm 8.5 mm 0.052 kg
HJ 308 EC 40 mm 57.55 mm 11 mm 0.084 kg
HJ 2208 EC 40 mm 53.95 mm 9 mm 0.048 kg
HJ 208 EC 40 mm 53.95 mm 8.5 mm 0.047 kg
HJ 307 EC 35 mm 51 mm 9.5 mm 0.058 kg
HJ 207 EC 35 mm 48.1 mm 7 mm 0.033 kg
HJ 406 30 mm 50.5 mm 11.5 mm 0.08 kg
HJ 306 EC 30 mm 44.95 mm 8.5 mm 0.042 kg
HJ 206 EC 30 mm 41.25 mm 7 mm 0.025 kg
HJ 305 EC 25 mm 38.1 mm 7 mm 0.025 kg
HJ 205 EC 25 mm 34.7 mm 6 mm 0.015 kg
HJ 304 EC 20 mm 31.25 mm 6.5 mm 0.017 kg
RNU 236 ECML 320 mm 52 mm 720 kN 850 kN 13.9 kg
RNU 236 ECMA 320 mm 52 mm 720 kN 850 kN 14.6 kg
RNU 1030 ML 225 mm 35 mm 228 kN 290 kN 3.7 kg
RNU 324 ECJ 260 mm 55 mm 610 kN 620 kN 10.2 kg
RNU 226 ECM 230 mm 40 mm 285 kN 305 kN 5.86 kg
RNU 1024 ML 180 mm 28 mm 153 kN 183 kN 1.89 kg
RNU 2319 ECML 200 mm 67 mm 530 kN 585 kN 8.09 kg
RNU 220 ECP 180 mm 34 mm 285 kN 305 kN 2.61 kg
RNU 220 ECJ 180 mm 34 mm 285 kN 305 kN 2.62 kg
RNU 2217 ECP 150 mm 36 mm 250 kN 280 kN 1.83 kg
RNU 1017 MA 130 mm 22 mm 78 kN 86.5 kN 0.76 kg
RNU 216 ECP 140 mm 26 mm 160 kN 166 kN 1.09 kg
RNU 1016 ECM 125 mm 22 mm 112 kN 127 kN 0.76 kg
RNU 1014 ML 110 mm 20 mm 64 kN 67 kN 0.53 kg
RNU 2212 ECP 110 mm 28 mm 146 kN 153 kN 0.79 kg
RNU 212 ECP 110 mm 22 mm 108 kN 102 kN 0.6 kg
RNU 212 ECJ 110 mm 22 mm 108 kN 102 kN 0.62 kg
RNU 2211 ECP 100 mm 25 mm 114 kN 118 kN 0.58 kg