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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 3028 K/SPW33VR522 140 mm 210 mm 53 mm 297 kN 520 kN 6.15 kg
NN 3028 K/SPW33VS019 140 mm 210 mm 53 mm 297 kN 520 kN 6.15 kg
NN 3028 K/SPW33 140 mm 210 mm 53 mm 297 kN 520 kN 6.15 kg
NN 3028 K/SPC3W33 140 mm 210 mm 53 mm 297 kN 520 kN 6.15 kg
NN 3028 K/SPC2W33 140 mm 210 mm 53 mm 297 kN 520 kN 6.15 kg
NNU 4926 BK/SPW33 130 mm 180 mm 50 mm 187 kN 390 kN 3.85 kg
NNU 4926 B/SPW33 130 mm 180 mm 50 mm 187 kN 390 kN 3.85 kg
NN 3026 TN9/SPW33 130 mm 200 mm 52 mm 292 kN 500 kN 5.59 kg
NN 3026 TN9/SPC3W33 130 mm 200 mm 52 mm 292 kN 500 kN 5.59 kg
NN 3026 TN9/SPC2W33 130 mm 200 mm 52 mm 292 kN 500 kN 5.59 kg
NN 3026 TN9/SPC1LW33 130 mm 200 mm 52 mm 292 kN 500 kN 5.59 kg
NN 3026 TN9/SP 130 mm 200 mm 52 mm 292 kN 500 kN 5.65 kg
NN 3026 KTN9/VQ497 130 mm 200 mm 52 mm 292 kN 500 kN 5.5 kg
NN 3026 KTN9/VL124 130 mm 200 mm 52 mm 292 kN 500 kN 5.5 kg
NN 3026 KTN9/UPW33 130 mm 200 mm 52 mm 292 kN 500 kN 5.44 kg
NN 3026 KTN9/UPVR522 130 mm 200 mm 52 mm 292 kN 500 kN 5.5 kg
NN 3026 KTN9/SPW33VR592 130 mm 200 mm 52 mm 292 kN 500 kN 5.44 kg
NN 3026 KTN9/SPW33VR5212 130 mm 200 mm 52 mm 292 kN 500 kN 5.44 kg
NN 3026 KTN9/SPW33VR521 130 mm 200 mm 52 mm 292 kN 500 kN 5.44 kg
NN 3026 KTN9/SPW33 130 mm 200 mm 52 mm 292 kN 500 kN 5.44 kg
NN 3026 KTN9/SPVR5220 130 mm 200 mm 52 mm 292 kN 500 kN 5.5 kg
NN 3026 KTN9/SPVR522 130 mm 200 mm 52 mm 292 kN 500 kN 5.5 kg
NN 3026 KTN9/SPVR521 130 mm 200 mm 52 mm 292 kN 500 kN 5.5 kg
NN 3026 KTN9/SPC2W33 130 mm 200 mm 52 mm 292 kN 500 kN 5.44 kg
NN 3026 KTN9/SPC2 130 mm 200 mm 52 mm 292 kN 500 kN 5.5 kg
NN 3026 KTN9/SP 130 mm 200 mm 52 mm 292 kN 500 kN 5.5 kg
NNU 4924 BK/SPW33 120 mm 165 mm 45 mm 176 kN 340 kN 2.8 kg
NNU 4924 B/SPW33 120 mm 165 mm 45 mm 176 kN 340 kN 2.8 kg
NN 3024 TN9/SPW33 120 mm 180 mm 46 mm 229 kN 390 kN 3.83 kg
NN 3024 TN9/SPCNW33 120 mm 180 mm 46 mm 229 kN 390 kN 3.83 kg
NN 3024 TN9/SPC2W33 120 mm 180 mm 46 mm 229 kN 390 kN 3.83 kg
NN 3024 KTN9/W33VQ497 120 mm 180 mm 46 mm 229 kN 390 kN 3.73 kg
NN 3024 KTN9/VQ497 120 mm 180 mm 46 mm 229 kN 390 kN 3.75 kg
NN 3024 KTN9/VL124 120 mm 180 mm 46 mm 229 kN 390 kN 3.75 kg
NN 3024 KTN9/UPVR522 120 mm 180 mm 46 mm 229 kN 390 kN 3.75 kg
NN 3024 KTN9/SPW33VR592 120 mm 180 mm 46 mm 229 kN 390 kN 3.73 kg
NN 3024 KTN9/SPW33 120 mm 180 mm 46 mm 229 kN 390 kN 3.73 kg
NN 3024 KTN9/SPVR5220 120 mm 180 mm 46 mm 229 kN 390 kN 3.75 kg
NN 3024 KTN9/SPVR522 120 mm 180 mm 46 mm 229 kN 390 kN 3.75 kg
NN 3024 KTN9/SPVR521 120 mm 180 mm 46 mm 229 kN 390 kN 3.75 kg