ZKLF40100-2RS-2AP-XL
Axial Angular Contact Ball Bearing
Double-row sealed precision bearing with matched pair configuration. P4 grade accuracy for ball screw support and rotary axis applications in demanding CNC machine tool environments.
ZKLF40100-2RS-2AP-XL / Axial Angular Contact Ball Bearing
The ZKLF40100-2RS-2AP-XL is a precision double-row axial angular contact ball bearing, purpose-designed for ball screw support and machine tool rotary axis applications. The "2RS" designation indicates dual rubber seals on both sides, providing excellent contamination protection while retaining factory-filled grease lubrication for the bearing's entire service life. The "2AP" suffix denotes a matched pair configuration, ensuring uniform preload distribution when two bearings are installed in tandem, face-to-face, or back-to-back arrangements.
Manufactured to P4 (ABEC-7) precision standards, this bearing delivers the high running accuracy and low runout essential for precision ball screw support in CNC machine tools. The double-row angular contact design provides high axial rigidity in both directions, supporting thrust loads generated during ball screw operation while maintaining precise axial positioning. Steel balls in a reinforced cage ensure reliable high-speed performance. Typical applications include ball screw support bearings in machining centers, lathe axis drives, grinding machine feed screws, and rotary table support in precision indexing equipment.
Download Drawing Get a QuoteDetailed Parameters
| Bearing Designation | ZKLF40100-2RS-2AP-XL |
| Type | Axial Angular Contact Ball Bearing |
| Arrangement | Double row |
| Row Configuration | Matched pair (2AP — two bearings in set) |
| Sealing | 2RS — double rubber seals, both sides |
| Precision Grade | P4 (ABEC-7 equivalent) |
| Bore Diameter | 40mm |
| Outer Diameter | 100mm |
| Width | 34mm (per bearing) |
| Ball Material | Steel (Gcr15) |
| Cage Material | Reinforced polyamide or brass |
| Contact Angle | 60° (axial emphasis) |
| Preload | Light (factory-set) |
| Lubrication | Grease — factory-filled, sealed for life |
| Running Accuracy | ≤ 0.002mm runout |
| Max Speed | ≈ 6,000 rpm (grease lubrication) |
| Operating Temperature | -20°C to +100°C |
| Mounting | Universal — can be arranged in tandem, O, or X configurations |
| Application | Ball Screw Support, Machine Tool Rotary Axes, Precision Indexing Tables |
Available Options & Customizations
- Ceramic ball (hybrid) variant for higher speeds
- Custom preload specification
- Special grease fill for extreme temperatures
- Individual bearing vs. matched pair set
- Non-contact seal variant for ultra-high speeds
Why Choose ZKLF40100-2RS-2AP-XL
Engineered for precision ball screw support and rotary axis applications, this bearing delivers the accuracy, rigidity, and reliability demanded by modern CNC machine tools.
P4 Precision
ABEC-7 equivalent grade delivers exceptional running accuracy with runout held to 0.002mm or less, ensuring precise ball screw positioning and minimal vibration in CNC machining operations.
Double Row Design
Two rows of balls with 60° contact angle provide high axial rigidity in both directions, supporting thrust loads generated during ball screw acceleration and deceleration.
Sealed for Life
2RS dual rubber seals provide robust contamination protection while retaining factory-filled high-grade grease, eliminating the need for relubrication over the bearing's entire service life.
Matched Pair
2AP matched pair configuration ensures uniform preload distribution when two bearings are installed together, eliminating the need for on-site shimming and simplifying spindle assembly.
High Axial Rigidity
The 60° contact angle and double-row arrangement provide superior axial stiffness compared to standard angular contact designs, critical for maintaining positional accuracy under thrust loads.
Ball Screw Support Optimized
Purpose-designed for ball screw support bearing arrangements in machining centers, lathes, and grinding machines. Provides the precise axial guidance essential for sub-micron positioning accuracy.
Need ZKLF Support Bearings?
Tell us your ball screw support bearing requirements -- bore size, accuracy grade, seal configuration, and quantity. Our application engineers will provide a competitive quotation with detailed technical documentation within 24 hours.