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Miniature 628 ZZ Bearing C4 628 2RS Bearing 8x24x8 Mm

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Miniature 628 ZZ Bearing C4 628 2RS Bearing 8x24x8 Mm

Brand Name : BUGAO

Model Number : 628

Certification : ISO9001:2015

Place of Origin : China

MOQ : Negotiable

Price : Negotiable

Payment Terms : T/T

Supply Ability : 30,000,000 sets per year

Delivery Time : 2-5days

Packaging Details : Single/Barrel/Individual packing, Industrial/Tube Packing, Custom Packing

Bearing Name : 628 ZZ Bearing

Bearing Material : Chrome Steel

Precision of bearing : P0, P6, P5, P4

Seal & Sheild : Open, Z, ZZ, RZ, 2RZ, RS, 2RS

Noise level of bearing : Z1V1, Z2V2, Z3V3,Z4V4

Clearance of bearing : C2, C0, C3, C4

Bearing life : Up to 10 years

HS code : 8482102000

Packaging : Individual packing, Tube packing, Custom packing

OEM Service : Customization Welcomed

Contact Now

‌Introduction to 628 Series Miniature Bearings:‌

The ‌628 series bearings‌ are high-performance ‌miniature bearings‌ designed for precision and durability in demanding industrial environments. Known for their compact design and versatility, these bearings are ideal for applications requiring smooth operation, high rotational speeds, and low noise.

Miniature 628 ZZ Bearing C4 628 2RS Bearing 8x24x8 Mm

‌Key Features‌:

  • ‌Compact Design‌: Small dimensions (8mm bore, 24mm OD, 8mm width) suit space-constrained machinery.
  • ‌High-Speed Capability‌: Optimized for applications up to ‌30,000 RPM‌ (grease-lubricated).
  • ‌Low Noise & Vibration‌: Precision-ground races and balls ensure quiet operation.
  • ‌Material Options‌: Chrome steel (standard) or stainless steel (corrosion-resistant).
  • ‌Versatile Sealing‌: Available in ‌OPEN‌, ‌ZZ‌ (metal shields), or ‌2RS‌ (rubber seals) configurations.

‌Typical Applications‌:

  • ‌Small Motors‌: Cooling fans, drone motors, and power tools.
  • ‌Medical Devices‌: Dental handpieces, lab equipment, and imaging systems.
  • ‌Office Equipment‌: Printers, scanners, and CNC spindle accessories.
  • ‌Robotics‌: Joints and actuators requiring precise motion control.

‌Comparison: 628 ZZ vs. 628 2RS vs. 628 OPEN‌

‌Feature‌ ‌628 ZZ‌ ‌628 2RS‌ ‌628 OPEN‌
‌Sealing Type‌ Metal shields (both sides) Rubber seals (both sides) No sealing
‌Protection Level‌ Dust resistance Water/dust resistance None
‌Speed Rating‌ High (30,000 RPM) Moderate (25,000 RPM) Highest (35,000 RPM)
‌Lubrication‌ Pre-greased Pre-greased Requires external grease
‌Maintenance‌ Low Low Frequent relubrication
‌Typical Use‌ Clean environments Harsh/dirty conditions High-speed, clean setups

‌

Shared Attributes‌:

  • ‌Dimensions‌: 8x24x8 mm (IDxODxWidth).
  • ‌Dynamic Load‌: ~1.3 kN; Static Load: ~0.5 kN.
  • ‌ABEC Rating‌: ABEC-1 (standard) or ABEC-3 (on request).
  • ‌Material‌: Chrome steel (GCR15) or stainless steel (AISI 440).

This series is widely used in ‌miniature bearings‌ markets due to its balance of performance and cost. For interchangeable options, the ‌628 bearing‌ matches with ‌MR84 (Japanese) or R-1240 (American)‌ standards.

Miniature 628 ZZ Bearing C4 628 2RS Bearing 8x24x8 Mm



Technical Parameters of Power Tool Ball bearings:

Basic
Bearing
No.

Bore d

Outer Diameter D

Width W

Radius r

Basic Load
Rating KN

Maximum Run
out Speed

Weight
Kg/pc

Dynamic

 Static

Grease

 Oil
mm inch mm inch mm inch mm inch

C

CO

r/min

r/min

604

4

 0.1575

12

 0.4724

4

 0.1575

0.2

 0.008

0.97

0.36

43000

51000

0.002

605

5

 0.1969

14

 0.5512

5

 0.1969

0.2

 0.008

1.33

0.505

39000

46000

0.0035

606

6

 0.2362

17

 0.6693

6

 0.2362

0.3

 0.012

2.24

0.91

28000

36000

0.008

607

7

 0.2756

19

 0.7480

6

 0.2362

0.3

 0.012

2.24

0.91

28000

36000

0.008

608

8

 0.3149

22

 0.8661

7

 0.2756

0.3

 0.012

3.35

1.4

26000

34000

0.012

609

9

 0.3543

24

 0.9449

7

 0.2756

0.3

 0.012

3.4

1.45

22000

30000

0.014

6000

10

 0.3937

26

 1.0236

8

 0.3150

0.3

 0.012

4.55

1.96

20000

28000

0.019

6001

12

 0.4724

28

 1.1024

8

 0.3150

0.3

 0.012

5.1

2.39

19000

26000

0.021

6002

15

 0.5906

32

 1.2598

9

 0.3543

0.3

 0.012

5.6

2.84

18000

24000

0.03

6003

17

 0.6693

35

 1.3780

10

 0.3937

0.3

 0.012

6.8

3.35

17000

22000

0.039

6004

20

 0.7874

42

 1.6535

12

 0.4724

0.6

 0.024

9.4

5.05

15000

19000

0.069

6005

25

 0.9843

47

 1.8504

12

 0.4724

0.6

 0.024

10.1

5.85

13000

17000

0.08

6006

30

 1.1811

55

 2.1654

13

 0.5118

1.0

 0.039

13.2

8.3

12000

15000

0.116


Applications of Power Tool Ball Bearings:


Customization:

  • We can printing your brand (logo,artwork)on the shield or laser engraving your brand on the shield.

  • We can custom your packaging according to your design.

  • All copyright owned by clients and we promised don't disclose any information.



Packing and Shipping:

  • The deep groove ball bearings will be securely packaged individually, or tube packing or packed as customization packing

  • Shipping method is negotiable.








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