628/8R is a non-standard single row deep groove ball bearing.

Standard 628 bearing bore size is 6mm, while 628/8R adopts modified inner ring with 8mm bore diameter, outer diameter 24mm, width 8mm. Open structure supports periodic lubriion maintenance. It can bear radial load and light bidirectional axial load simultaneously.

Optional versions: 628/8ZZ with metal shields, 628/8-2RS with rubber seals. Widely used in miniature motors, handheld power tools, small fans, precision instrumentation and compact automation rotary components.

Formal quotation will be sent within 24 hours upon your inquiry.

Model:

628/8R

Dimensions:

d8 mm, D24 mm, B8 mm

Min chamfer r:

0.4 mm

Net weight:

approx 0.017 kg

Structure:

Non-standard single row deep groove ball bearing

Material:

GCr15 bearing steel, pressed steel cage

Standard clearance:

CN; C3 clearance available

Basic dynamic load Cr:

3320 N

Basic static load C0r:

1680 N

Limiting speed (grease):

26000 rpm

Additional info:

Complete dimension drawings and load data available on request.

1. Modified non-standard inner bore, direct replacement solution for special design equipment
2. Deep raceway structure operates smoothly under combined radial and slight axial loads
3. Multiple optional configurations: open type, ZZ metal shield, 2RS rubber seal
4. Compact miniature size, fits limited installation space of small mechanical structures
5. Low noise and low vibration during continuous medium-high speed operation
6. Customizable: P6 precision grade, nylon cage, OEM laser marking, high-temperature grease

• Miniature DC motors, small fan and blower rotating assemblies
• Handheld power tools, garden small machinery transmission parts
• Precision testing instruments and optical automation equipment
• Small household appliances and office equipment rotary units
• Custom machinery requiring 8mm bore and 24mm outer diameter bearing

25 years professional bearing manufacturer, products exported globally.

Precision turning and grinding processing for non-standard inner ring.

Strict clearance grouping and noise inspection for miniature bearings.

24-hour technical support for non-standard bearing modifiion consultation.

Ample stock for machinery distributors.

Precise dimensions and stable service performance.

GCr15 raw material quenching & tempering hardness inspection

Precision superfinishing for raceways and steel balls

Dimensional tolerance, internal clearance and rotational smoothness testing

Surface roughness and appearance defect inspection

If you need 628/8R deep groove ball bearings:

Send inquiry to obtain below supports:

• Quick quotation within 24 hours
• 628/8ZZ / 628/8-2RS sealed variant consultation
• Optional C3 clearance and nylon cage scheme
• Competitive factory direct price
• Contact our sales team for full datasheets and formal offer.