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Small deep groove ball 6304 ZZ7&6304-2RS WholesaleHome / Products / Small deep groove ball 6304 ZZ7&6304-2RS

  • Small deep groove ball 6304 ZZ7&6304-2RS
Small deep groove ball 6304 ZZ7&6304-2RS

Small deep groove ball 6304 ZZ7&6304-2RS

Product advantages:
1. Strong R&D capability and comprehensive product line
2. 34 main production lines and 2 customized production lines
3. Advanced production equipment and laboratory equipment
4. Productivity (daily) 200,000 sets, 180,000 grinding and automatic assembly 165,000.
5. On-time delivery capability, the error is within 3-5 days
6. Multiple cooperation projects with 2 research institutions and university research institutes.
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Th product YSK produces are widely used in various fields, please do no hesitate to contact us if any needs of bearings!

Bearing number Bore d  O.D D Width B
Chamfer  rmin
mm
 Load Rating Ball complement Maxronout Speed Weight
mm in  mm in mm in Dynamic Static Cor No. Size mm Grease r/mm Oil r/mm kg
635 5 0.1968 19 0.7480 6 0.2362 0.3 2.010 1.050 7 3.500 28000 36000 0.0080
636 6 0.2362 22 0.8661 7 0.2756 0.3 1.530 1.360 7 3.969 26000 34000 0.0130
637 7 0.2756 26 1.0236 9 0.3543 0.6 3.340 1.410 7 3.969 30000 38000 0.0057
638 8 0.3149 28 1.1024 9 0.3543 0.3 3.520 1.950 7 4.763 22000 30000 0.0290
639 9 0.3543 30 1.1811 10 0.3937 0.6 5.120 2.390 8 4.762 27000 34000 0.0092
6300 10 0.3937 35 1.3780  11 0.4331 0.6 5.880 3.470 7 6.350 18000 24000 0.0532
6301 12 0.4724 37 1.4566 12 0.4724 1.0 7.480 4.650 6 7.938 17000 22000 0.0574
6302 15 0.5906 42 1.6535 13 0.5118 1.0 8.800 5.430 7 7.938 16000 20000 0.0804
6303 17 0.6693 47 1.8504 14 0.5511 1.0 10.45 6.560 7 8.731 15000 19000 0.1096
6304 20 0.7874 52 2.074 15 0.5906 1.1 12.26 7.810 7 9.525 14000 17000 0.1417
6305 25 0.9843 62 2.4409 17 0.6692 1.1 17.22 11.39 7 11.500 12000 14000 0.1930
6306 30 1.1811 72 2.8346 19 0.7480  1.1 20.77 14.17 8 12.000 01000 01200 0.3498
6307 35 1.3780  80 3.1496 21 0.8268 1.5 33.50 19.10 8 13.494 08400 06000 0.4570
6308 40 1.5748 90 3.5433 23 0.9055 1.5 40.50 24.10 8 15.081 07500 09000 0.6330
6309 45 1.7717 100 3.9370  25 0.9843 1.5 53.00 32.00 8 17.462 06700 04500 0.8330
6310 50 1.9685 110 4.3307 27 1.0630  2.0 62.00 38.10 8 19.050 06200 07300 1.0700
6311 55 2.1654 120 4.7244 29 1.1417 2.0 71.50 44.50 8 20.638 05600 06600 1.3700
6312 60 2.3622 130 5.1181 31 1.2205 2.1 82.00 52.00 8 22.225 05100 06100 1.7000
6313 65 2.5590  140 5.5118 33 1.2992 2.1 92.50 59.50 8 23.019 04700 05700 2.0800
6314 70 2.7559 150 5.9055 36 1.4173 2.1 104.00 68.00 8 25.400 04400 05300 2.5200

High-precision equipment guarantees the quality and reliability of product manufacturing

Outer Ring Face Grinding

quality control：
1. height：0um~-120um
2. height parallel difference：≤5um
  • material loading-lift type
  • Incoming grinding
  • height & parallel difference Insepection
  • process diagram

Inner Ring Face Grinding

quality control：
1. height：0um~-120um
2. height parallel difference：≤5um
  • material loading-rotary
  • grinding-chuck type
  • height & parallel difference Insepection
  • processdiagram

Centerless Grinding Of Outer Ring (O.D.)

quality control：
1. O.D. roundness（2~15）：≤1.0um
2. O.D. dimension：+10~+15um
3. Ovality：≤5um
4. Onical degree：≤5um
5. Perpendicular difference：≤8um
6. Appearance: no abrasion and black rust
  • material loading
  • material inputing
  • after grinding
  • O.D checking
  • Process diagram
  • outer ring O.D.roundness detection

Centerless Grinding Of Inner Ring (O.D.)

quality control：
1. O.D. roundness (2~15）≤0.8um
2. O.D. dimension：0~+5um
3. Ovality：≤5um
4. Conicity：≤5um
5. Perpendicular difference：≤5um
6. Appearance: no abrasion and black rust
  • material loading -rotary
  • grinding in process
  • after grinding
  • O.D. checking
  • Process diagram
  • Roundness checking

Super Grinding Of O.D.

quality control：
1. O.D. roundness (2~15）:≤0.5um
2. Grinding quantity：2um~+5um
  • material loading -rotary
  • super grinding with oilstone
  • after grinding
  • grinding quantity inspection
  • O.D. roundness check

Outer Ring Raceway Grinding

quality control：
1. Raceway roundness：≤1.0um
2. Raceway diameter dimension：0~-15um
3. Raceway position：≤20um
4. Raceway parallel difference：≤6um
5. Raceway curvature：R2.55~R2.57
6. Appearance:No burn marks, no vibration marks, no abrasion
  • Material loading -rotary
  • Outer ring raceway grinder
  • Grinding in process
  • Raceway diameter measuring
  • Raceway R inspection
  • Process diagram
  • Roundness checking

Inner Ring Raceway grinding

quality control：
1. Raceway roundness：≤0.8um
2. Raceway diameter dimension：0~-15um
3. Raceway position：≤20um
4. Raceway parallel difference：≤6um
5. Raceway curvature：R2.45~R2.47
6. Appearance:No burn marks, no vibration marks, no abrasion
  • inner ring raceway grinder
  • grinding in process
  • washing & drying after grinding
  • Raceway R inspection
  • Roundness checking
  • Rocess diagram

Inner Ring I.D.(Bore) Grinding

quality control：
1. I.D.dimension：0~-7um
2. Ovality：≤4um
3. Conicity：≤4um
4. Appearance: no abrasion and black rust
  • Bore grinder
  • Grinding in process
  • Washing & drying after grinding
  • Bore size inspection
  • Process diagram

Inner Ring I.D.(Bore) Grinding

quality control：
1.Inside diameter data setting：-0.5um~-6um
2.Internal diameter calibration frequency: 100pcs/time
  • Automatic inner diameter detector for 100% online inspection
  • During the test, probe is into the bore for measurement

Quality Control Requirements Of Supergrinding Process

quality control：
1. Grinding Tolerance：8um~15um；
2. Ovality：≤0.5um；
3. Apparence: examine under a microscope, the magnified raceway, supergrinding finishing should be clean and clear, no scratch.

Fitting

quality control：
1. Clearance：8um~16um
2. No damage to raceway during measuring；
3. No scratch steel balls；
  • Automatic nested device
  • Measuring raceway diameter (outer ring & inner ring)
  • Radial clearance meter
  • Inserting steel ball
Quality product

Provide high-quality bearing products

The professional China Small deep groove ball 6304 ZZ7&6304-2RS manufacturers and Small deep groove ball 6304 ZZ7&6304-2RS factory takes "expanding the national industry and replacing imported bearings" as its mission. With high-quality products, We have won the trust of customers and developed rapidly. The company's own brands include YGA, QIJI and YSK. The company adheres to the concepts of people-oriented, ruled by law, prospering the enterprise by quality, and continuous innovation. It provides excellent talents with a good development platform to fully attract, cultivate and respect talents. The company establishes a scientific management mechanism and builds an excellent management team.
We sincerely welcome people from all walks of life to visit our company and cooperate with integrity!

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Contact us

If you need it, please contact us!

We have a strong R&D team,and we can develop and produce products according to the drawings or samples the customers offered.

  • Address:

    1# Houheshan Rd, Tianhua Industrial District, Ningbo City, Zhejiang Province, China.

  • Phone:

    +86-(0)574 5898 1713

  • Fax:

    +86-0574-6222 6676

  • Email:

    info@yskbearing.com