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 | S61905 | |
| Bore diameter | d | 25 mm |
| Outside diameter | D | 42 mm |
| Width | B | 9 mm |
| Basic dynamic load rating | C | 7.5 kN |
| Basic static load rating | C0 | 4.55 kN |
| Fatigue load limit | Pu | 0.28 kN |
| Reference speed | nref | 14000 r/min |
| Limiting speed | nG | 20900 r/min |
| Mass | ≈m | 0.047 kg |
| Precision class | PN — Normal (ISO 492:2023) | |
| Internal clearance | CN (Group N) — Normal internal clearance | |
| Sealing | 2Z — Non-contact shield on both sides | |
| Cage | JN — Steel sheet metal | |
| Lubricant | Lubricating grease | |
| Minimum operating temperature | Tmin | -30 °C |
| Maximum operating temperature | Tmax | 120 °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 characteristics9 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Version code | >N | Not marked on bearing |
| Material Bearing | S | Stainless steel |
| Type of Seal | 2Z | Non-contact shield on both sides |
| Cage | JN | Steel sheet metal |
| Tolerance class | PN | Normal (ISO 492:2023) |
| Dimensional / heat stabilization | SN | Rings dimensional stabilized up to 120° |
| Lubricant | Lubricating grease | |
| Radial internal clearance | CN (Group N) | Normal internal clearance |
| Bore type | Z | Cylindrical |
Main Dimensions & Performance Data9 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore diameter | d | 25 mm0.984 in |
| Outside diameter | D | 42 mm1.654 in |
| Width | B | 9 mm0.354 in |
| Basic dynamic load rating, radial | Cr | 7,500 N1,686.151 lbf |
| Basic static load rating, radial | C0r | 4,550 N1,022.932 lbf |
| Fatigue load limit, radial | Cur | 280 N62.95 lbf |
| Limiting speed | nG | 20,900 1/min |
| Reference speed | nϑr | 14,000 1/min |
| Mass | ≈m | 47 g1.658 oz |
Mounting dimensions3 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Minimum diameter shaft shoulder | da min | 27 mm1.063 in |
| Maximum diameter of housing shoulder | Da max | 40 mm1.575 in |
| Maximum fillet radius | ra max | 0.3 mm0.012 in |
Dimensions4 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Minimum chamfer dimension | rmin | 0.3 mm0.012 in |
| Shoulder diameter outer ring | D1 | 36.8 mm1.449 in |
| Caliber diameter outer ring | D2 | 37.9 mm1.492 in |
| Shoulder diameter inner ring | d1 | 30.2 mm1.189 in |
Temperature range2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Operating temperature min. | Tmin | -30 °C-22 °F |
| Operating temperature max. | Tmax | 120 °C248 °F |
Calculation factors1 parameter
| Parameter | Symbol | Value |
|---|---|---|
| Calculation factor | f0 | 15.4 |
Capabilities & suitability7 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Radial load capacity | Yes | |
| Axial load capacity in one direction | Yes | |
| Axial load capacity in both directions | Yes | |
| Lifetimelubricationfreedomfrommaintenance | Yes | |
| Suitable for grease lubrication | Yes | |
| Sealedonbothsides | Yes | |
| Protectedagainstrust | Yes |
Manufacturer Identity5 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Schaeffler Product Code | 3957688 | |
| Brand | FAG | |
| Base Type | S61905 | |
| SAP material number | 3046689740000 | |
| Base product | 2305080101 |
Product Identity2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Construction | Deep groove ball bearing S619..-2Z, corrosion-resistant materials, single row, shields, steel sheet metal cage | |
| Short Description | Deep groove ball bearing |
Technical Data18 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore Diameter (D) | 25 mm | |
| Outside Diameter (D) | 42 mm | |
| Width (B) | 9 mm | |
| Basic Dynamic Load Rating, Radial (Cr) | 7,500 N | |
| Basic Static Load Rating, Radial (C0R) | 4,550 N | |
| Operating Temperature Min. (Tmin) | -30 °C | |
| Limiting Speed (Ng) | 20,900 1/min | |
| Operating Temperature Max. (Tmax) | 120 °C | |
| Reference Speed (Nϑr) | 14,000 1/min | |
| Calculation Factor (F0) | 15.4 | |
| Fatigue Load Limit, Radial (Cur) | 280 N | |
| Minimum Diameter Shaft Shoulder (Da Min) | 27 mm | |
| Shoulder Diameter Inner Ring (D1) | 30.2 mm | |
| Maximum Diameter Of Housing Shoulder (Da Max) | 40 mm | |
| Minimum Chamfer Dimension (Rmin) | 0.3 mm | |
| Maximum Fillet Radius (Ra Max) | 0.3 mm | |
| Shoulder Diameter Outer Ring (D1) | 36.8 mm | |
| Caliber Diameter Outer Ring (D1) | 37.9 mm |
