Technical data
Product specifications
Metric and imperial values are paired where the manufacturer provides both. Expand a section to review its parameters.
Core specifications17 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Series | 61956 | |
| Bore diameter | d | 280 mm |
| Outside diameter | D | 380 mm |
| Width | B | 46 mm |
| Basic dynamic load rating | C | 237 kN |
| Basic static load rating | C0 | 310 kN |
| Fatigue load limit | Pu | 10.2 kN |
| Reference speed | nref | 1990 r/min |
| Limiting speed | nG | 2850 r/min |
| Mass | ≈m | 12.9 kg |
| Precision class | PN — Normal (ISO 492:2023) | |
| Internal clearance | C3 (Group 3) — Internal clearance larger than CN | |
| Sealing | Without — Not sealed | |
| Cage | M — Solid brass cage, rolling element guided | |
| Lubricant | Without — Bearing not greased | |
| Minimum operating temperature | Tmin | -30 °C |
| Maximum operating temperature | Tmax | 200 °C |
Precision classification2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Radial ball bearing tolerance equivalent | ABEC 1Derived from ISO Normal; not a direct ABEC marking | |
| Mapping basis | ISO 492 / ANSI/ABMA 20The original manufacturer tolerance remains the controlling value. |
Product characteristics7 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Type of Seal | Without | Not sealed |
| Cage | M | Solid brass cage, rolling element guided |
| Tolerance class | PN | Normal (ISO 492:2023) |
| Dimensional / heat stabilization | S1 | Rings dimensional stabilized up to 200° |
| Lubricant | Without | Bearing not greased |
| Radial internal clearance | C3 (Group 3) | Internal clearance larger than CN |
| Bore type | Z | Cylindrical |
Main Dimensions & Performance Data9 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore diameter | d | 280 mm11.024 in |
| Outside diameter | D | 380 mm14.961 in |
| Width | B | 46 mm1.811 in |
| Basic dynamic load rating, radial | Cr | 237,000 N53,282.374 lbf |
| Basic static load rating, radial | C0r | 310,000 N69,694.245 lbf |
| Fatigue load limit, radial | Cur | 10,200 N2,293.165 lbf |
| Limiting speed | nG | 2,850 1/min |
| Reference speed | nϑr | 1,990 1/min |
| Mass | ≈m | 12.9 kg28.44 lbs |
Mounting dimensions3 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Minimum diameter shaft shoulder | da min | 290.2 mm11.425 in |
| Maximum diameter of housing shoulder | Da max | 369.8 mm14.559 in |
| Maximum fillet radius | ra max | 2.1 mm0.083 in |
Dimensions3 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Minimum chamfer dimension | rmin | 2.1 mm0.083 in |
| Shoulder diameter outer ring | D1 | 351.1 mm13.823 in |
| Shoulder diameter inner ring | d1 | 310.1 mm12.209 in |
Temperature range2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Operating temperature min. | Tmin | -30 °C-22 °F |
| Operating temperature max. | Tmax | 200 °C392 °F |
Calculation factors1 parameter
| Parameter | Symbol | Value |
|---|---|---|
| Calculation factor | f0 | 16.4 |
Capabilities & suitability7 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Radial load capacity | Yes | |
| Axial load capacity in one direction | Yes | |
| Axial load capacity in both directions | Yes | |
| Suitable for grease lubrication | Yes | |
| Suitable for oil lubrication | Yes | |
| Unsealed design | Yes | |
| Largebearing | Yes |
Manufacturer Identity9 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Schaeffler Product Code | 350681 | |
| Brand | FAG | |
| Base Type | 61956 | |
| X Life Marking | n.r. | |
| SAP material number | 0190990700030 | |
| Base product | 2305080101 | |
| Bearing X designation | 61956-M-C3 | |
| Mounting Manager ID | 61956-M-C3 | |
| Grease application ID | 61956-M-C3 |
Product Identity2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Construction | Deep groove ball bearing 619..-M, single row, solid brass cage | |
| Short Description | Deep groove ball bearing |
Technical Data17 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore Diameter (D) | 280 mm | |
| Outside Diameter (D) | 380 mm | |
| Width (B) | 46 mm | |
| Basic Dynamic Load Rating, Radial (Cr) | 237,000 N | |
| Basic Static Load Rating, Radial (C0R) | 310,000 N | |
| Operating Temperature Min. (Tmin) | -30 °C | |
| Limiting Speed (Ng) | 2,850 1/min | |
| Operating Temperature Max. (Tmax) | 200 °C | |
| Reference Speed (Nϑr) | 1,990 1/min | |
| Calculation Factor (F0) | 16.4 | |
| Fatigue Load Limit, Radial (Cur) | 10,200 N | |
| Minimum Diameter Shaft Shoulder (Da Min) | 290.2 mm | |
| Shoulder Diameter Inner Ring (D1) | 310.1 mm | |
| Maximum Diameter Of Housing Shoulder (Da Max) | 369.8 mm | |
| Minimum Chamfer Dimension (Rmin) | 2.1 mm | |
| Maximum Fillet Radius (Ra Max) | 2.1 mm | |
| Shoulder Diameter Outer Ring (D1) | 351.1 mm |