Manufactured by CHG Bearing, the 71911 ACD/P4AQBCC is a precision Super-precision Angular Contact Ball Bearings. Key dimensional parameters include a 55 mm bore diameter, a 80 mm outer diameter, and a 52 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.
71911 ACD/P4AQBCC - Super-precision Angular Contact Ball Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 71911 ACD/P4AQBCC |
| Brand | CHG® |
| Characteristics | |
| Bearing Type | Super-precision Angular Contact Ball Bearing |
| Number of Rows | 4 |
| Contact Type | Normal Contact (Two-point Contact) |
| Ring Type | Integral Inner and Outer Rings |
| Design | High-capacity D Design |
| Universally Matchable | No |
| Number of Bearings in Set | 4 |
| Axial Clearance / Preload | Medium Preload |
| Tolerance Class | P4A |
| Bearing Material | Bearing Steel |
| Sealing | Open |
| Dimensions | |
| Bore Diameter (d) | 55 mm |
| Width (B) | 52 mm |
| Outer Diameter (D) | 80 mm |
| Contact Angle α (°) | 25 ° |
| Performance | |
| Basic Dynamic Load Rating C (kN) | 48.8 kN |
| Basic Static Load Rating C₀ (kN) | 55 kN |
| Material | |
| Weight (kg) | 0.704 kg |
71911 ACD/P4AQBCC 80 mm 55 mm 52 mm Frequently Asked Questions about 71911 ACD/P4AQBCC Super-precision Angular Contact Ball Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
The Open Type engineered for 71911 ACD/P4AQBCC 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.
Engineered according to international ISO boundary plans, CHG Bearing supplies 71911 ACD/P4AQBCC with a precision bore diameter (d) of 55 mm, an outside diameter (D) of 80 mm, and a nominal ring width (B) of 52 mm. This configuration yields an effective cross-sectional wall thickness of 12.5 mm and an envelope ratio (D/d) of 1.45, delivering compact rigidity for OEM machinery housings.
Absolutely. The CHG Bearing 71911 ACD/P4AQBCC Super-precision Angular Contact Ball Bearings is a 1:1 direct interchange for renowned brands, matching part numbers: SKF 71911 ACD/P4AQBCC, FAG 71911 ACD/P4AQBCC, NSK 71911 ACD/P4AQBCC. It shares identical envelope boundary dimensions, load capacities, and shaft fits, allowing instant drop-in replacement without retrofitting your machinery.
When fitting 71911 ACD/P4AQBCC over a 55 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.
