SET TIMKEN 2MM9306WICRDUL BEARINGS

Description:

The Timken 2MM9306WICRDUL (Manufacturing Part Number: 2MM9306WI DUL, World Part Number: 71906C-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, precision lathes, and other high-accuracy manufacturing equipment.

Applications:

The Timken 2MM9306WICRDUL 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, minimizes vibration, and delivers excellent rotational accuracy, making it ideal for CNC machining centers, high-speed milling machines, grinding machines, machining spindles, routers, and other industrial machine tools.

Technical Specifications:

• Manufacturer Part Number (MPN): 2MM9306WICRDUL (Manufacturing Part Number: 2MM9306WI DUL)
• World Part Number: 71906C-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 71906C)
• Bore Diameter (ID): 30 mm
• Outside Diameter (OD): 47 mm (1.850 in)
• Bearing Width (Single): 9 mm (0.354 in)
• Total Width (Duplex Set): 18 mm (0.709 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)
• Dynamic Radial Load Rating (C1): 6.61 kN (1,486 lbf) per bearing
• Static Radial Load Rating (C0): 9.54 kN (2,145 lbf) per bearing
• Limiting Speed (Grease): 29,000 rpm
• Limiting Speed (Oil): 58,000 rpm
• Maximum Shaft Fillet Radius: 0.6 mm (0.024 in)
• Maximum Housing Fillet Radius: 0.6 mm (0.024 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 2MM9306WICRDUL super precision bearing set
• SKF 71906 CD/P4A duplex bearing set
• NSK 71906CTYNSULP4 duplex bearing set