+86-021-66274776
WhatsApp/Wechat：+86-18930714776

Double 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
BC2B 326372/HA1 1319.5 mm 1720 mm 12500 kN 34500 kN
BC2-8022/HA1 950 mm 1360 mm 14000 kN 33500 kN
BC2B 326379/HA4 800 mm 1260 mm 12800 kN 28000 kN
314420 750 mm 1000 mm 6160 kN 16600 kN
NNU 41/710 M/W33 710 mm 1150 mm 13400 kN 28500 kN
BC2-8074/HA5 690 mm 980 mm 10500 kN 27000 kN
BC2-8015/HB1 690 mm 980 mm 9900 kN 27000 kN
BC2B 326894/HB1 650 mm 920 mm 8580 kN 23200 kN
NNU 41/600 M/W33 600 mm 980 mm 9900 kN 21200 kN
BC2-8005/HB1 600 mm 820 mm 7810 kN 21200 kN
316115 550 mm 800 mm 5830 kN 13400 kN
NNU 41/530 M/W33 530 mm 870 mm 7810 kN 16000 kN
NNU 41/530 K30M/W33 530 mm 870 mm 7810 kN 16000 kN
BC2B 326064/HA1 530 mm 780 mm 4400 kN 9500 kN
BC2B 320117/HA4 530 mm 780 mm 7210 kN 17300 kN
NNU 41/500 M/W33 500 mm 830 mm 7480 kN 15000 kN
314419 500 mm 720 mm 4730 kN 10800 kN
NNU 4196 M/W33 480 mm 790 mm 7040 kN 14300 kN
316189 480 mm 700 mm 5390 kN 12500 kN
NNU 4192 M 460 mm 760 mm 6440 kN 12900 kN
BC2-8004/HA1 460 mm 780 mm 5610 kN 10400 kN
316739 A 460 mm 650 mm 4400 kN 11200 kN
BC2B 322969/HB1 457.2 mm 660.4 mm 3690 kN 8150 kN
NNU 4888 M/W33 440 mm 540 mm 1170 kN 3400 kN
NNU 4888 KM/W33 440 mm 540 mm 1010 kN 2900 kN
BC2B 316521 440 mm 640 mm 4570 kN 9800 kN
316077 A 440 mm 620 mm 3910 kN 9800 kN
BC2B 326137/HB1 420 mm 580 mm 2380 kN 5300 kN
314982 420 mm 600 mm 3580 kN 8800 kN
314391 420 mm 620 mm 3470 kN 7800 kN
316019 410 mm 600 mm 3800 kN 8650 kN
BC2B 326363/HA4 400 mm 600.19 mm 3470 kN 7200 kN
314987 C 400 mm 560 mm 3140 kN 7800 kN
314987 B 400 mm 560 mm 3140 kN 7800 kN
NNU 4176 M 380 mm 620 mm 4290 kN 8500 kN
BC2B 326131/HB1 380 mm 540 mm 2010 kN 4300 kN
BC2B 320041 380 mm 540 mm 2860 kN 6800 kN
BC2B 319961 370 mm 520 mm 2750 kN 6700 kN
BC2B 322217 360 mm 500 mm 2050 kN 4300 kN
BC2B 319878 350 mm 520 mm 2120 kN 4500 kN