Manufactured by CHG Bearing, the 71908 ACB/HCP4ADGA is a precision Super-precision Angular Contact Ball Bearings. Key dimensional parameters include a 40 mm bore diameter, a 62 mm outer diameter, and a 24 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.
71908 ACB/HCP4ADGA - Super-precision Angular Contact Ball Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 71908 ACB/HCP4ADGA |
| Brand | CHG® |
| Characteristics | |
| Bearing Type | Super-precision Angular Contact Ball Bearing |
| Number of Rows | 2 |
| Contact Type | Normal Contact (Two-point Contact) |
| Ring Type | Integral Inner and Outer Rings |
| Design | High-speed B Design |
| Universally Matchable | Yes – Back-to-back (DB), Face-to-face (DF), or Tandem (DT) |
| Matched Arrangement | Universal Matching |
| Number of Bearings in Set | 2 |
| Axial Clearance / Preload | Extra-light Preload |
| Tolerance Class | P4A |
| Bearing Material | Hybrid (Steel Rings / Ceramic Balls) |
| Sealing | Open |
| Dimensions | |
| Bore Diameter (d) | 40 mm |
| Width (B) | 24 mm |
| Outer Diameter (D) | 62 mm |
| Contact Angle α (°) | 25 ° |
| Performance | |
| Basic Dynamic Load Rating C (kN) | 8.19 kN |
| Basic Static Load Rating C₀ (kN) | 7.8 kN |
| Material | |
| Weight (kg) | 0.226 kg |
71908 ACB/HCP4ADGA 62 mm 40 mm 24 mm Frequently Asked Questions about 71908 ACB/HCP4ADGA Super-precision Angular Contact Ball Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
When fitting 71908 ACB/HCP4ADGA over a 40 mm shaft, CHG Bearing strictly recommends uniform induction heating (controlled between 90°C and 110°C) or precision hydraulic press sleeves. Under no circumstances should direct impact blows be struck against the rings or cage, as shock loads cause brinelling indents and premature spalling.
Yes, CHG Bearing works closely with industrial OEMs and brand distributors. We offer turnkey custom engineering for 71908 ACB/HCP4ADGA, including laser-etched customer logos, custom internal radial clearances, specialized grease formulations, and bespoke protective packaging.
To safeguard CHG Bearing 71908 ACB/HCP4ADGA against fretting wear and false brinelling during transport or vibration, assemble mating surfaces (40 mm x 62 mm) using anti-fretting mounting paste. Maintaining strict alignment and avoiding prolonged static vibration will preserve raceway polish.
To match diverse operational dynamics, CHG Bearing supplies 71908 ACB/HCP4ADGA with multiple cage configurations: high-strength pressed steel ribbon cages for standard duty, solid machined brass cages (M/CA) for heavy vibration and shock loads, or lightweight glass-fiber reinforced polyamide cages (TN9/TVP) for high acceleration and ultra-low noise.
