Manufactured by CHG Bearing, the 61911P4 is a precision Deep Groove Ball Bearings（618 / 619 SERIES）. Key dimensional parameters include a 55 mm bore diameter, a 80 mm outer diameter, and a 13 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.
61911P4 - Deep Groove Ball Bearings（618 / 619 SERIES）
Technical Specifications
| Overview | |
|---|---|
| Part Number | 61911P4 |
| Brand | CHG® |
| Characteristics | |
| Bearing Type | Deep Groove Ball Bearing |
| Seal Type | Open / Contact Seal Options |
| Load Direction | Radial |
| Row Configuration | Single Row |
| Dimensions | |
| Bore Diameter (d) | 55 mm |
| Width (B) | 13 mm |
| Outer Diameter (D) | 80 mm |
| Bore Diameter Tolerance | -0.007-0 mm |
| Outside Diameter Tolerance | -0.007-0 mm |
| Width Tolerance | -0.15-0 mm |
| Performance | |
| Basic Dynamic Radial Load Rating Cr (kN) | 16 kN |
| Basic Static Radial Load Rating C0r (kN) | 13.3 kN |
| Limiting Speed – Grease (r/min) | 8000 r/min |
| Limiting Speed – Oil (r/min) | 9500 (r/min) |
| Material | |
| Mass (kg) | 0.189 kg |
| Ring Material | Stainless Steel / Bearing Steel |
| Cage Material | Brass / PEEK / Polyimide / Phenolic Resin Fabric Laminate |
| Ball Material | Stainless Steel / Bearing Steel / Ceramic |
| Operating Temperature Range (°C) | -50 to +100 °C |
| Precision Class | P4 |
| Radial Internal Clearance | 0.008-0.028 mm |
61911P4 80 mm 55 mm 13 mm Frequently Asked Questions about 61911P4 Deep Groove Ball Bearings（618 / 619 SERIES）
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
The Open / Contact Seal Options engineered for 61911P4 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 standard production, CHG Bearing subjects 61911P4 to precision bainite or martensite quenching, offering dimensional stability up to 120°C (248°F). For high-heat processing equipment, CHG Bearing also supplies custom S0 (150°C), S1 (200°C), or S2 (250°C) stabilization heat treatments upon request to prevent residual austenite transformation.
For international ocean and air freight, CHG Bearing packs 61911P4 with industrial VCI anti-corrosion barrier wrapping, sealed polybags, individual cartons, and fumigated ocean-worthy wooden crates. This multi-layer barrier guarantees rust-free storage for a minimum shelf life of 24 to 36 months.
Absolutely. The CHG Bearing 61911P4 Deep Groove Ball Bearings（618 / 619 SERIES） is a 1:1 direct interchange for renowned brands, matching part numbers: SKF 61911P4, FAG 61911P4, NSK 61911P4. It shares identical envelope boundary dimensions, load capacities, and shaft fits, allowing instant drop-in replacement without retrofitting your machinery.
