62 Series
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6203/8 Custom 8 mm Bore Deep Groove Ball Bearing
Custom 8 mm bore deep groove ball bearing · brand NCWY
6203/8
d8mm
D40mm
B12mm
Mass, approx.80 g
- Open / ZZ / 2RS / 2RZ closures
- P0 / P6 / P5 precision · C0–C5 clearance
- Noise grades ZV1–ZV4 / EMQ
Overview
6203/8 is a custom 8 mm bore deep groove ball bearing with a 8 mm bore, 40 mm outer diameter and 12 mm width, part of the 62 Series family. Boundary dimensions are produced to customer drawing / factory tables (non-standard envelope or special bore) and are cross-checked against the factory attribute tables where available.
The 62 Series is the most widely used family in our range and the core of our low-noise motor programme. Miniature sizes 624–629 and the 6200–6203 motor bearings cover washing machines, fans, air conditioners, power tools and automotive auxiliaries. It is normally supplied open or with ZZ metal shields, 2RS rubber seals or 2RZ seals, in precision grades P0/P6/P5 and radial clearance C0/C2/C3/C4/C5. Typical applications include electric motors, washing machines, fans, air conditioners.
The bore is 8 mm on the standard 6203 outside diameter — a special bore produced to customer drawing. Note that the 6203/8 designation is also used in the market for a 12.7 mm (1/2 in) bore bearing, so confirm the bore on your drawing before ordering.
- Closure options: Open, ZZ, 2RS, 2RZ — open, metal shield or rubber seal to suit dust and grease retention.
- Precision P0, P6, P5; clearance C0, C2, C3, C4, C5; noise grades ZV1, ZV2, ZV3, ZV4, EMQ / CM.
- GCr15 chrome steel (100Cr6), 58–62 HRC; steel or nylon cage options.
- Stainless rings, ceramic balls and non-standard sizes can all be ordered to drawing; black chamfer, chamfer colour, custom grease and customer marking also available on request.
Boundary dimensions
| Model | 6203/8 | Series | 62 Series |
|---|---|---|---|
| Bore diameter d | 8 mm | Outer diameter D | 40 mm |
| Width B | 12 mm | Chamfer r min | 0.6 mm |
| Mass, approx. | 80 g | Closure options | Open · ZZ · 2RS · 2RZ |
| Precision grades | P0 · P6 · P5 | Radial clearance | C0 · C2 · C3 · C4 · C5 |
| Noise grades | ZV1 · ZV2 · ZV3 · ZV4 · EMQ / CM | Cage | Steel · Nylon |
| Ring material | GCr15 chrome steel (100Cr6), 58–62 HRC | MOQ | 2,000 pcs standard models (trial orders negotiable; samples available) |
| Lead time | 7–25 days for standard models; 30–50 days for special or custom orders | Packing | Plastic tube · Single box + plastic bag · VCI anti-rust paper · Export carton · OEM packaging and labels |
| Ports | Ningbo / Shanghai | Payment | T/T 30% in advance, balance against B/L copy; L/C at sight |
Dimensions in millimetres. Mass is approximate and depends on closure, cage and grease. Load ratings and limiting speeds are available on request.
Variants and customisation
The base model can be supplied in the closures, tolerances and noise grades below. Anything outside this list is quoted on drawing.
Closure options
OpenZZ2RS2RZ
Precision grades
P0P6P5
Radial clearance
C0C2C3C4C5
Noise grades
ZV1ZV2ZV3ZV4EMQ / CM
Cage
SteelNylon
Customisation
Black chamferChamfer colourCustom greaseCustom bore checkCustom marking
Typical applications
Typical uses for this family. Send the application and we will advise on closure, clearance and grease.
Quality & documentation
Noise and vibration graded in-house; SGS RoHS test report available for compliance files. ISO 9001, CE, SASO and PVOC documents on request.
Boundary dimensionsTo drawing
Noise & vibrationZV1–ZV4 · EMQ
SGS RoHS reportSHAEC1610052101
