Technical data
Product specifications
Metric and imperial values are paired where the manufacturer provides both. Expand a section to review its parameters.
Core specifications10 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Series | ZARN2572 | |
| Bore diameter | d | 25 mm |
| Outside diameter | D | 72 mm |
| Width | B | 75 mm |
| Basic dynamic load rating | C | 24.3 kN |
| Basic static load rating | C0 | 41.5 kN |
| Fatigue load limit | Pu | 6 kN |
| Mass | ≈m | 1.315 kg |
| Minimum operating temperature | Tmin | -30 °C |
| Maximum operating temperature | Tmax | 120 °C |
Manufacturer Identity4 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Schaeffler Product Code | 397951 | |
| Brand | INA | |
| Base Type | ZARN2572 | |
| X Life Marking | n.r. |
Product Identity2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Construction | Needle roller/axial cylindrical roller bearings ZARN..-L, double direction, long shaft locating washer | |
| Short Description | Needle roller/axial cylindrical roller bearing |
Technical Data32 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore Diameter (D) | 25 mm | |
| Outside Diamater (D) | 72 mm | |
| Hight (H) | 75 mm | |
| Basic Dynamic Load Rating, Radial (Cr) | 24,300 N | |
| Basic Static Load Rating, Radial (C0R) | 41,500 N | |
| Basic Dynamic Load Rating, Axial (Ca) | 80,000 N | |
| Basic Static Load Rating, Axial (C0A) | 199,000 N | |
| Height Outer Ring Over Wave Washer (H1) | 55 mm | |
| Operating Temperature Min. (Tmin) | -30 °C | |
| Limiting Speed For Grease Lubrication (Ng Grea) | 1,400 1/min | |
| Tilting Stiffness (Ckl) | 800 Nm/mrad | |
| Minimum Diameter Shaft Shoulder (Da) | 45 mm | |
| Limiting Speed (Ng Oil) | 4,900 1/min | |
| Operating Temperature Max. (Tmax) | 120 °C | |
| Fatigue Load Limit, Axial (Cua) | 18,600 N | |
| Outside Diameter Wave Washer Long (D3) | 60 mm | |
| Maximum Diameter Of Housing Shoulder (Da) | 63 mm | |
| Width, Outer Ring (C) | 20 mm | |
| Minimum Chamfer Dimension (R1 Min) | 0.6 mm | |
| Rip Diameter Shaft Washer (D1) | 62 mm | |
| Width Inner Ring (B) | 12.5 mm | |
| Rigidity Axial (Cal) | 3,000 N/µm | |
| Required Locknut Force (Required Loc) | 20,790 N | |
| Bearing Friction Torque (Mrl) | 1.6 Nm | |
| Tightening Torque Nut (Ma) | 55 Nm | |
| Minimum Chamfer Dimension (Rmin) | 0.3 mm | |
| Axial Runout (Axial Runout) | 1 µm | |
| Width Heel Wave Washer Long (B2) | 13 mm | |
| Heeldiameter Wave Washer Long (D2) | 48 mm | |
| Mass Moment Of Inertia (Mm) | 4.51 kg*cm2 | |
| Fatigue Load Limit, Radial (Cur) | 6,000 N | |
| Width Wave Washer Long (B1) | 27.5 mm |
