TIMKEN 309K Z3 FS50000 OPEN BALL BEARING

Description:

The Timken 309K Z3 FS50000 is a single-row deep groove radial ball bearing from the Timken Fafnir® 300 Series. This open-style bearing is designed to support primarily radial loads with moderate axial loads in both directions while providing smooth, low-friction performance at high operating speeds. The Z3 designation indicates controlled electric motor quality (EMQ) noise and vibration levels, while the FS50000 suffix identifies a Timken manufacturing specification. It is commonly used in electric motors, pumps, gearboxes, conveyors, fans, compressors, and other industrial rotating equipment requiring reliable and quiet operation.

Applications:

The Timken 309K Z3 FS50000 bearing is engineered for industrial applications requiring high-speed performance, low vibration, and long service life. Its open deep-groove design provides excellent radial load capacity and moderate thrust load capability, making it suitable for electric motors, industrial pumps, conveyor systems, fans, compressors, machine tools, and general power transmission equipment.

Technical Specifications:

• Manufacturer Part Number (MPN): 309K Z3 FS50000
• Manufacturer: Timken Fafnir
• Product Type: Deep groove ball bearing
• Bearing Type: Single-row radial deep groove ball bearing
• Series: 300 Series
• Bore Diameter (ID): 45 mm (1.7717 in)
• Outside Diameter (OD): 100 mm (3.9370 in)
• Width: 25 mm (0.9843 in)
• Closure Type: Open
• Bore Type: Straight bore
• Ball Material: Steel
• Cage Material: Steel
• Noise/Vibration Grade: Z3 (Electric Motor Quality)
• Manufacturer Specification: FS50000
• Dynamic Radial Load Rating (C1): 58,700 N (13,200 lbf)
• Static Radial Load Rating (C0): 31,700 N (7,120 lbf)
• Limiting Speed (Grease): 4,140 rpm
• Limiting Speed (Oil): 4,830 rpm
• Maximum Shaft Fillet Radius: 1.5 mm (0.059 in)
• Weight: Approximately 0.80 kg (1.76 lb)
• Function: Supports radial loads and moderate axial loads in both directions while providing smooth, high-speed operation.
• Features: Open bearing design, EMQ Z3 noise grade, precision-ground raceways, low friction, durable steel construction, and long service life.

Common Replacements:

• Timken 309K Z3 FS50000 deep groove ball bearing
• SKF 6309 deep groove ball bearing
• NSK 6309 deep groove ball bearing