Manufactured by CHG Bearing, the QJF1034M is a precision Four-Point Contact Ball Bearings. Key dimensional parameters include a 170 mm bore diameter, a 260 mm outer diameter, and a 42 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.

QJF1034M - Four-Point Contact Ball Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | QJF1034M |
| Brand | CHG® |
| Construction | Single Row |
| Characteristics | |
| Bearing Type | Four-Point Contact Ball Bearing |
| Series | QJF |
| Load Direction | Combined |
| Dimensions | |
| Bore Diameter (d) | 170 mm |
| Width (B) | 42 mm |
| Outer Diameter (D) | 260 mm |
| Chamfer Dimension r (min.) | 2.1 mm |
| Performance | |
| Basic Dynamic Load Rating C (kN) | 296 kN |
| Basic Static Load Rating C0 (kN) | 428 kN |
| Material | |
| Mass (kg) | 8.84 kg |
| Cage Material | Brass |
QJF1034M 260 mm 170 mm 42 mm Frequently Asked Questions about QJF1034M Four-Point Contact Ball Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
To match diverse operational dynamics, CHG Bearing supplies QJF1034M 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.
As a primary manufacturer, CHG Bearing supports both trial batch evaluations and container-load supply for QJF1034M. Standard catalog sizes are stocked for rapid 3–7 day dispatch, while high-volume OEM production runs typically dispatch within 30–45 days.
Standard batches of CHG Bearing QJF1034M conform strictly to ISO Class Normal (ABEC-1). For high-precision machine tool spindles, gearboxes, or robotics requiring tighter runouts, CHG Bearing can provide custom batches graded to ISO Class 6 (P6/ABEC-3) or ISO Class 5 (P5/ABEC-5) with 100% micrometer verification.
The CHG Bearing QJF1034M 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.
