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Double Row Complete 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
NNC 4856 CV 280 mm 350 mm 69 mm 737 kN 1860 kN
NNF 5052 B-2LS 260 mm 400 mm 190 mm 2420 kN 4650 kN
NNCL 4952 CV 260 mm 360 mm 100 mm 1170 kN 2550 kN
NNCL 4852 CV 260 mm 320 mm 60 mm 561 kN 1400 kN
NNCF 5052 CV 260 mm 400 mm 190 mm 2860 kN 5100 kN
NNCF 4952 CV 260 mm 360 mm 100 mm 1170 kN 2550 kN
NNCF 4852 CV 260 mm 320 mm 60 mm 561 kN 1400 kN
NNC 4852 CV 260 mm 320 mm 60 mm 561 kN 1400 kN
319452 B-2LS 260 mm 340 mm 95 mm 990 kN 2160 kN
NNF 5048 B-2LS 240 mm 360 mm 160 mm 1680 kN 3350 kN
NNCL 4948 CV 240 mm 320 mm 80 mm 781 kN 1760 kN
NNCL 4848 CV 240 mm 300 mm 60 mm 539 kN 1290 kN
NNCF 5048 CV 240 mm 360 mm 160 mm 2120 kN 3900 kN
NNCF 4948 CV 240 mm 320 mm 80 mm 781 kN 1760 kN
NNCF 4848 CV 240 mm 300 mm 60 mm 539 kN 1290 kN
NNC 4948 CV 240 mm 320 mm 80 mm 781 kN 1760 kN
NNC 4848 CV 240 mm 300 mm 60 mm 539 kN 1290 kN
319448 B-2LS 240 mm 320 mm 95 mm 952 kN 2040 kN
NNF 5044 B-2LS 220 mm 340 mm 160 mm 1610 kN 3100 kN
NNCL 4944 CV 220 mm 300 mm 80 mm 737 kN 1600 kN
NNCL 4844 CV 220 mm 270 mm 50 mm 380 kN 865 kN
NNCF 5044 CV 220 mm 340 mm 160 mm 2010 kN 3600 kN
NNCF 4944 CV 220 mm 300 mm 80 mm 737 kN 1600 kN
NNCF 4844 CV 220 mm 270 mm 50 mm 380 kN 865 kN
NNC 4944 CV 220 mm 300 mm 80 mm 737 kN 1600 kN
NNC 4844 CV 220 mm 270 mm 50 mm 352 kN 865 kN
319444 B-2LS 220 mm 300 mm 95 mm 880 kN 1860 kN
NNF 5040 B-2LS 200 mm 310 mm 150 mm 1450 kN 2900 kN
NNCL 4940 CV 200 mm 280 mm 80 mm 704 kN 1500 kN
NNCL 4840 CV 200 mm 250 mm 50 mm 369 kN 800 kN
NNCF 5040 CV 200 mm 310 mm 150 mm 1680 kN 3050 kN
NNCF 4940 CV 200 mm 280 mm 80 mm 704 kN 1500 kN
NNCF 4840 CV 200 mm 250 mm 50 mm 369 kN 800 kN
NNC 4940 CV 200 mm 280 mm 80 mm 704 kN 1500 kN
NNC 4840 CV 200 mm 250 mm 50 mm 369 kN 800 kN
319440 B-2LS 200 mm 270 mm 80 mm 627 kN 1370 kN
NNF 5038 B-2LS 190 mm 290 mm 136 mm 1190 kN 2200 kN
NNCL 4938 CV 190 mm 260 mm 69 mm 605 kN 1290 kN
NNCL 4838 CV 190 mm 240 mm 50 mm 358 kN 750 kN
NNCF 5038 CV 190 mm 290 mm 136 mm 1470 kN 2600 kN