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Ningbo Kent Bearing Co., Ltd

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City:ningbo

Province/State:zhejiang

Country/Region:china

Contact Person:MrGary Hua

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

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

Name: Miniature 628 ZZ Bearing C4 628 2RS Bearing 8x24x8 Mm
Brand: BUGAO
Price: 1 USD

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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

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‌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.

‌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.

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
									Basic Load Rating KN		Maximum Run out Speed
									Dynamic	Static	Grease	Oil
									Dynamic	Static	Grease	Oil
	mm	inch	mm	inch	mm	inch	mm	inch	C	C_O	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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