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Four 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
315196 A 460 mm 650 mm 8250 kN 18300 kN
315811 E 450 mm 590 mm 3910 kN 12000 kN
635043 440 mm 660 mm 7210 kN 13700 kN
BC4B 326361 B/HA1 431.5 mm 571.5 mm 4460 kN 10200 kN
BC4-8037/HA1VA907 431.5 mm 571.5 mm 4460 kN 10200 kN
313555 B/VJ202 420 mm 580 mm 4680 kN 10800 kN
313513 420 mm 600 mm 7210 kN 17600 kN
BC4-8059 400 mm 560 mm 4680 kN 10200 kN
315802/VJ202 400 mm 590 mm 7920 kN 16600 kN
BC4B 322264/HB1 380 mm 560 mm 5230 kN 10600 kN
BC4B 320989/HA3 380 mm 540 mm 6440 kN 14000 kN
BC2B 322217/VJ202 360 mm 500 mm 4400 kN 8500 kN
BC2B 320075/VJ202 360 mm 500 mm 3910 kN 7350 kN
BC4B 457939 VAA 356.67 mm 550 mm 5280 kN 15000 kN
BC4-8022/HA1 355.6 mm 482.6 mm 2970 kN 6400 kN
BC4B 326909/HA3 350 mm 520 mm 4680 kN 9000 kN
BC4B 326909 A/HA3 350 mm 520 mm 4680 kN 9000 kN
BC4B 322777/HB1 350 mm 500 mm 5830 kN 13700 kN
BC4B 322261/HB1 340 mm 500 mm 5230 kN 11800 kN
BC4-8050 340 mm 450 mm 2550 kN 6000 kN
BC4-0124 300 mm 420 mm 4400 kN 8300 kN
BC4-0094 300 mm 420 mm 4400 kN 8300 kN
NNUD 6056 ECMAS/P53 280 mm 420 mm 3690 kN 6550 kN
BC4-0107 280 mm 390 mm 2800 kN 5000 kN
BC4-0100 280 mm 390 mm 3750 kN 6950 kN
BC4-0110 260 mm 370 mm 2700 kN 4650 kN
BC4-0099 240 mm 330 mm 2160 kN 4300 kN
BC4-0112 230 mm 330 mm 2320 kN 4000 kN
BC4-0117 220 mm 310 mm 1900 kN 3550 kN
BC4-0097 220 mm 310 mm 2280 kN 4050 kN
BC4-0113 200 mm 270 mm 1430 kN 2700 kN
BC4-0106 200 mm 290 mm 1930 kN 3200 kN
BC4-0095 200 mm 280 mm 1700 kN 3000 kN
BC4-0092 200 mm 280 mm 1860 kN 3350 kN
BC4-0051 200 mm 270 mm 1700 kN 3200 kN
BC4-0116 190 mm 280 mm 2080 kN 3250 kN
BC4-0109 190 mm 270 mm 1800 kN 3150 kN
BC4-0098 190 mm 260 mm 1430 kN 2600 kN
BC4-0114 180 mm 260 mm 1560 kN 2500 kN
BC4-0119 170 mm 240 mm 1140 kN 1830 kN