Manufactured by CHG Bearing, the 604 is a precision Metric Miniature Deep Groove Ball Bearings. Key dimensional parameters include a 4 mm bore diameter, a 12 mm outer diameter, and a 4 mm overall width. This component is designed to meet standard load requirements and ensure consistent operational performance. For comprehensive technical evaluation, please explore the detailed specifications, dimensional data, product images, and CAD drawings provided below. A complete PDF data sheet is also readily available for direct download to support your engineering and procurement needs.
604 - Metric Miniature Deep Groove Ball Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 604 |
| Dimensions | |
| Bore Diameter (d) | 4 mm |
| Width (B) | 4 mm |
| Outer Diameter (D) | 12 mm |
| Open Width B | 4 mm |
| Radius rs min | 0.2 mm |
| Flange Df | 13.5 mm |
| Closed Width B1 | 4 mm |
| Open Flange Width Bf | 1 mm |
| Closed Flange Width Bf1 | 1 mm |
| Performance | |
| Dynamic Load Cr (N) | 957 N |
| Static Load C0r (N) | 350 N |
| Grease Speed (x1000 rpm) | 48 x1000 rpm |
| Oil Speed (x1000 rpm) | 56 x1000 rpm |
| Design Configurations | |
| Open Model | 604 |
| Flanged Open Model | F604 |
| Shielded Model | 604ZZ |
| Flanged Shielded Model | F604ZZ |
| 2RS | 2RS |
| 2RU | 2RU |
| TTS | - |
| Internal Design & Weight | |
| Cage Type | J |
| Ball Qty. Z | 7 |
| Ball Size Dw | 2 mm |
| Shielded Weight (g) | 2.34 g |
| Flanged Shielded Weight (g) | 2.57 g |
| Open Weight (g) | 2.19 g |
| Flanged Open Weight (g) | 2.42 g |
604 12 mm 4 mm 4 mm Frequently Asked Questions about 604 Metric Miniature Deep Groove Ball Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
The Open Type engineered for 604 by CHG Bearing utilizes precision non-contact metal shields or reinforced NBR/FKM contact lip seals. This barrier prevents particulate ingress, washdown fluids, and abrasive dust from reaching the raceways while eliminating grease leakage under centrifugal forces.
Yes, CHG Bearing works closely with industrial OEMs and brand distributors. We offer turnkey custom engineering for 604, including laser-etched customer logos, custom internal radial clearances, specialized grease formulations, and bespoke protective packaging.
Engineered according to international ISO boundary plans, CHG Bearing supplies 604 with a precision bore diameter (d) of 4 mm, an outside diameter (D) of 12 mm, and a nominal ring width (B) of 4 mm. This configuration yields an effective cross-sectional wall thickness of 4.0 mm and an envelope ratio (D/d) of 3.0, delivering compact rigidity for OEM machinery housings.
In its sealed configuration (Open Type), CHG Bearing pre-charges 604 with premium wide-temperature lithium-complex or polyurea grease, calibrated to a 30%–35% cavity volume ratio. For open-type variants, synthetic PAO or refined mineral lubricating oils with appropriate EP (Extreme Pressure) additives should be circulated.
