TIMKEN 2MM9317WI CR DUL SUPER PRECISION BEARING 2MM9317WICRDUL

Description:

The Timken 2MM9317WICRDUL (Manufacturing Part Number: 2MM9317WI DUL, World Part Number: 71917C-T-P4S-DUL) is a matched duplex set of super precision single-row angular contact ball bearings from the Timken Fafnir® 9300WI series. Factory matched with DUL (light preload), this bearing set is designed for high-speed machine tool spindles requiring exceptional rigidity, low runout, and precise shaft positioning. It is commonly used in CNC machining centers, milling machines, grinding machines, jig borers, and other precision manufacturing equipment.

Applications:

The Timken 2MM9317WICRDUL bearing set is engineered for high-speed spindle applications where accuracy, rigidity, and thermal stability are critical. Its duplex light preload arrangement improves spindle stiffness and rotational accuracy while minimizing vibration, making it suitable for CNC machining centers, precision lathes, grinding machines, machining spindles, routers, and other industrial machine tools.

Technical Specifications:

• Manufacturer Part Number (MPN): 2MM9317WICRDUL (Manufacturing Part Number: 2MM9317WI DUL)
• World Part Number: 71917C-T-P4S-DUL
• Manufacturer: Timken Fafnir
• Product Type: Super precision angular contact ball bearing set
• Bearing Type: Duplex matched single-row angular contact ball bearings
• Series: 9300WI (ISO 71917C)
• Bore Diameter (ID): 85 mm
• Outside Diameter (OD): 120 mm (4.724 in)
• Bearing Width (Single): 18 mm (0.709 in)
• Total Width (Duplex Set): 36 mm (1.417 in)
• Contact Angle: 15°
• Arrangement: Duplex matched pair
• Preload: DUL (Light preload)
• Ball Material: Steel
• Cage Type: CR outer land riding cage
• Cage Material: MBR phenolic cage
• Precision Rating: ISO P4S (ABEC 7/9 equivalent)
• Static Radial Load Rating (C0): 36,000 N (8,090 lbf) per bearing
• ISO Dynamic Radial Load Rating (C1): 37,800 N (8,500 lbf) per bearing
• Limiting Speed (Grease): 13,200 rpm
• Limiting Speed (Oil): 26,400 rpm
• Maximum Shaft Fillet Radius: 1.0 mm (0.039 in)
• Maximum Housing Fillet Radius: 1.0 mm (0.039 in)
• Function: Supports combined radial and axial loads in high-speed precision spindle applications.
• Features: Factory-matched duplex set, light preload, super precision construction, low runout, high rigidity, optimized for high-speed machine tool spindles, and excellent thermal stability.

Common Replacements:

• Timken 2MM9317WICRDUL super precision bearing set
• SKF 71917 CD/P4A duplex bearing set
• NSK 71917CTYNSULP4 duplex bearing set