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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
BC4-8042/HA4 1400 mm 1780 mm 52300 kN 163000 kN
BC4-8005/HA4 1400 mm 1900 mm 61600 kN 183000 kN
BC4-8029/HA4 1350 mm 1765 mm 40200 kN 122000 kN
BC4-8016/HA4 1300 mm 1655 mm 40200 kN 122000 kN
BC4-8062/HA1 1040 mm 1440 mm 38000 kN 93000 kN
315265 937.5 mm 1270.25 mm 28100 kN 83000 kN
BC4-8067/HA3 900 mm 1280 mm 28600 kN 64000 kN
BC4-8021/HB1 850 mm 1180 mm 28100 kN 73500 kN
315826 B 850 mm 1150 mm 27500 kN 75000 kN
BC4B 316341/HA4 820 mm 1100 mm 21200 kN 57000 kN
BC4-8015/HB1 780 mm 1070 mm 24200 kN 61000 kN
312979 D 760 mm 1080 mm 23800 kN 65500 kN
313685 B 759 mm 1210 mm 25500 kN 85000 kN
BC4-8066/HA3 750 mm 1090 mm 21600 kN 51000 kN
239509 FA 660 mm 820 mm 8090 kN 22800 kN
BC4B 457969 633.334 mm 960 mm 16800 kN 45000 kN
BC4-8041/HA4 620 mm 820 mm 10100 kN 26500 kN
315526 606.667 mm 920 mm 16500 kN 45000 kN
BC4B 322497/HA4 600 mm 870 mm 13200 kN 31500 kN
315175 C 600 mm 820 mm 14000 kN 36000 kN
BC4B 322930/HA4 560 mm 820 mm 14200 kN 34000 kN
313189 A 559.84 mm 920 mm 20100 kN 45500 kN
BC4-8046/HB1 556 mm 800 mm 10500 kN 25500 kN
316691 550 mm 740 mm 11000 kN 27000 kN
313535 D 536.176 mm 762.03 mm 11400 kN 29000 kN
312844/VJ202 529.91 mm 870 mm 16800 kN 33500 kN
BC4B 319411 510 mm 680 mm 9680 kN 26000 kN
BC4-8009/HB1 510 mm 730 mm 10200 kN 22000 kN
BC4-8007/HB1 510 mm 760 mm 12100 kN 26500 kN
BC4B 326853/HB1 500 mm 738 mm 10800 kN 23200 kN
BC4B 322066 500 mm 720 mm 8580 kN 17600 kN
BC4B 322039/HA1 500 mm 670 mm 8250 kN 22000 kN
BC4B 316515 500 mm 680 mm 8250 kN 22000 kN
319254/VJ202 500 mm 650 mm 4400 kN 10200 kN
316083 A 500 mm 670 mm 8250 kN 22000 kN
BC2B 326196/HA1VJ202 487.98 mm 637 mm 6440 kN 15300 kN
319320 480 mm 680 mm 9130 kN 19300 kN
BC4B 326261/HA1 475 mm 600 mm 5500 kN 14600 kN
BC4-8003/HA1VA907 475 mm 600 mm 5500 kN 14600 kN
BC4B 322993 A/HA7 460 mm 650 mm 7810 kN 18300 kN