Manufactured by CHG Bearing, the R144J* is a precision Inch Miniature Deep Groove Ball Bearings. Key dimensional parameters include a 3.175 mm bore diameter, a 6.35 mm outer diameter, and a 2.38 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.
R144J* - Inch Miniature Deep Groove Ball Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | R144J* |
| Dimensions | |
| Bore Diameter (d) | 3.175 mm |
| Width (B) | 2.38 mm |
| Outer Diameter (D) | 6.35 mm |
| Open Width B | 2.38 mm |
| Radius rs min | 0.1 mm |
| Flange Df | 7.518 mm |
| Closed Width B1 | 2.779 mm |
| Open Flange Width Bf | 0.584 mm |
| Closed Flange Width Bf1 | 0.787 mm |
| Performance | |
| Dynamic Load Cr (N) | 311 N |
| Static Load C0r (N) | 110 N |
| Grease Speed (x1000 rpm) | 67 x1000 rpm |
| Oil Speed (x1000 rpm) | 80 x1000 rpm |
| Design Configurations | |
| Open Model | R144J* |
| Flanged Open Model | FR144J* |
| Shielded Model | R144JZZ* |
| Flanged Shielded Model | FR144JZZ* |
| 2RS | - |
| 2RU | - |
| TTS | TTS |
| Internal Design & Weight | |
| Cage Type | J |
| Ball Qty. Z | 8 |
| Ball Size Dw | 1 mm |
| Shielded Weight (g) | 0.32 g |
| Flanged Shielded Weight (g) | 0.4 g |
| Open Weight (g) | 0.27 g |
| Flanged Open Weight (g) | 0.33 g |
R144J* 6.35 mm 3.175 mm 2.38 mm Frequently Asked Questions about R144J* Inch Miniature Deep Groove Ball Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Absolutely. The CHG Bearing R144J* Inch Miniature Deep Groove Ball Bearings is a 1:1 direct interchange for renowned brands, matching part numbers: SKF R144J*, FAG R144J*, NSK R144J*. It shares identical envelope boundary dimensions, load capacities, and shaft fits, allowing instant drop-in replacement without retrofitting your machinery.
The Open Type engineered for R144J* 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.
As a primary manufacturer, CHG Bearing supports both trial batch evaluations and container-load supply for R144J*. Standard catalog sizes are stocked for rapid 3–7 day dispatch, while high-volume OEM production runs typically dispatch within 30–45 days.
Yes, CHG Bearing works closely with industrial OEMs and brand distributors. We offer turnkey custom engineering for R144J*, including laser-etched customer logos, custom internal radial clearances, specialized grease formulations, and bespoke protective packaging.
