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Super Precision 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
NN 3024 KTN9/SP 120 mm 180 mm 46 mm 229 kN 390 kN 3.75 kg
NNU 4922 BK/SPW33 110 mm 150 mm 40 mm 132 kN 270 kN 2.05 kg
NNU 4922 B/SPW33 110 mm 150 mm 40 mm 132 kN 270 kN 2.05 kg
NN 3022 TN9/SPW33 110 mm 170 mm 45 mm 220 kN 360 kN 3.48 kg
NN 3022 TN9/SPC3LW33 110 mm 170 mm 45 mm 220 kN 360 kN 3.48 kg
NN 3022 TN9/SP 110 mm 170 mm 45 mm 220 kN 360 kN 3.5 kg
NN 3022 KTN9/VQ585 110 mm 170 mm 45 mm 220 kN 360 kN 3.4 kg
NN 3022 KTN9/VQ497 110 mm 170 mm 45 mm 220 kN 360 kN 3.4 kg
NN 3022 KTN9/VQ055 110 mm 170 mm 45 mm 220 kN 360 kN 3.4 kg
NN 3022 KTN9/UPVR522 110 mm 170 mm 45 mm 220 kN 360 kN 3.4 kg
NN 3022 KTN9/SPW33VR522 110 mm 170 mm 45 mm 220 kN 360 kN 3.38 kg
NN 3022 KTN9/SPW33VR5212 110 mm 170 mm 45 mm 220 kN 360 kN 3.38 kg
NN 3022 KTN9/SPW33VR521 110 mm 170 mm 45 mm 220 kN 360 kN 3.38 kg
NN 3022 KTN9/SPW33 110 mm 170 mm 45 mm 220 kN 360 kN 3.38 kg
NN 3022 KTN9/SPVR592 110 mm 170 mm 45 mm 220 kN 360 kN 3.4 kg
NN 3022 KTN9/SPVR5220 110 mm 170 mm 45 mm 220 kN 360 kN 3.4 kg
NN 3022 KTN9/SPVR522 110 mm 170 mm 45 mm 220 kN 360 kN 3.4 kg
NN 3022 KTN9/SPVR521 110 mm 170 mm 45 mm 220 kN 360 kN 3.4 kg
NN 3022 KTN9/SPVM127 110 mm 170 mm 45 mm 220 kN 360 kN 3.4 kg
NN 3022 KTN9/SPC2W33 110 mm 170 mm 45 mm 220 kN 360 kN 3.38 kg
NN 3022 KTN9/SP 110 mm 170 mm 45 mm 220 kN 360 kN 3.4 kg
NNU 4921 BK/SPW33 105 mm 145 mm 40 mm 130 kN 260 kN 2 kg
NNU 4921 B/SPW33 105 mm 145 mm 40 mm 130 kN 260 kN 2 kg
NN 3021 KTN9/UPVR522 105 mm 160 mm 41 mm 190 kN 305 kN 2.7 kg
NN 3021 KTN9/SPW33 105 mm 160 mm 41 mm 190 kN 305 kN 2.68 kg
NN 3021 KTN9/SPVR521 105 mm 160 mm 41 mm 190 kN 305 kN 2.7 kg
NN 3021 KTN9/SP 105 mm 160 mm 41 mm 190 kN 305 kN 2.7 kg
NNU 4920 BK/SPW33 100 mm 140 mm 40 mm 128 kN 255 kN 1.9 kg
NNU 4920 B/SPW33 100 mm 140 mm 40 mm 128 kN 255 kN 1.9 kg
NN 3020 TN9/SPW33 100 mm 150 mm 37 mm 151 kN 250 kN 2.08 kg
NN 3020 TN9/SP 100 mm 150 mm 37 mm 151 kN 250 kN 2.1 kg
NN 3020 KTN9/W33VQ497 100 mm 150 mm 37 mm 151 kN 250 kN 2.08 kg
NN 3020 KTN9/VQ585 100 mm 150 mm 37 mm 151 kN 250 kN 2.1 kg
NN 3020 KTN9/VQ497 100 mm 150 mm 37 mm 151 kN 250 kN 2.1 kg
NN 3020 KTN9/VM1271 100 mm 150 mm 37 mm 151 kN 250 kN 2.1 kg
NN 3020 KTN9/UPW33VR521 100 mm 150 mm 37 mm 151 kN 250 kN 2.08 kg
NN 3020 KTN9/UPW33 100 mm 150 mm 37 mm 151 kN 250 kN 2.08 kg
NN 3020 KTN9/UPVR522 100 mm 150 mm 37 mm 151 kN 250 kN 2.1 kg
NN 3020 KTN9/UPVR521 100 mm 150 mm 37 mm 151 kN 250 kN 2.1 kg
NN 3020 KTN9/UP 100 mm 150 mm 37 mm 151 kN 250 kN 2.1 kg