Manufactured by CHG Bearing, the 61806P4 is a precision Deep Groove Ball Bearings（618 / 619 SERIES）. Key dimensional parameters include a 30 mm bore diameter, a 42 mm outer diameter, and a 7 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.
61806P4 - Deep Groove Ball Bearings（618 / 619 SERIES）
Technical Specifications
| Overview | |
|---|---|
| Part Number | 61806P4 |
| 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) | 30 mm |
| Width (B) | 7 mm |
| Outer Diameter (D) | 42 mm |
| Bore Diameter Tolerance | -0.005-0 mm |
| Outside Diameter Tolerance | -0.006-0 mm |
| Width Tolerance | -0.12-0 mm |
| Performance | |
| Basic Dynamic Radial Load Rating Cr (kN) | 4.5 kN |
| Basic Static Radial Load Rating C0r (kN) | 3.45 kN |
| Limiting Speed – Grease (r/min) | 15000 r/min |
| Limiting Speed – Oil (r/min) | 18000 (r/min) |
| Material | |
| Mass (kg) | 0.024 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 | 0.005-0.02 mm |
61806P4 42 mm 30 mm 7 mm Frequently Asked Questions about 61806P4 Deep Groove Ball Bearings（618 / 619 SERIES）
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
For international ocean and air freight, CHG Bearing packs 61806P4 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.
Quality starts with raw material selection: CHG Bearing crafts 61806P4 inner and outer rings from high-purity High-Quality Chrome Steel (GCr15/100Cr6). Our raw billets undergo vacuum degassing and secondary ESR (electroslag remelting) processes to drastically eliminate non-metallic sulfide and oxide inclusions, elevating subsurface contact fatigue resistance.
Absolutely. The CHG Bearing 61806P4 Deep Groove Ball Bearings（618 / 619 SERIES） is a 1:1 direct interchange for renowned brands, matching part numbers: SKF 61806P4, FAG 61806P4, NSK 61806P4. It shares identical envelope boundary dimensions, load capacities, and shaft fits, allowing instant drop-in replacement without retrofitting your machinery.
The CHG Bearing 61806P4 is rated for limiting speeds up to standard rated RPM under forced oil-mist or circulating oil lubrication regimes. When lubricated with factory-filled synthetic high-speed grease, safe continuous velocity is maintained at approximately 75% to 85% of the maximum nominal limit, preventing thermal runaway.
