Product No.: 330104-03-06-05-02-00 - General Introduction
This product is a precision slotted shaft hub or a timing pulley hub, designed as part of a modular power transmission or motion control system. The part number follows a structured code where each segment defines a key physical and functional attribute. It is engineered to provide a rigid, zero-backlash connection between a shaft and another component (like a timing pulley, gear, or sprocket) via a combination of a clamping mechanism and a parallel keyway.
Detailed Parameters
| Parameter Category | Specification | Details / Notes |
|---|---|---|
| Bore Size (I.D.) | 6 mm | The "-06-" segment specifies the nominal inner diameter for mounting on a 6mm shaft. Tolerance is typically h7 or similar for a precise fit. |
| Keyway Specification | Width: 2 mm Depth: 1.0 mm (approx.) | The "-05-" segment commonly indicates a metric parallel keyway size. This corresponds to a 2mm wide x 1.3mm deep keyway (ISO/R773) for a 6mm shaft. |
| Outer Diameter (O.D.) | Approx. 13 - 16 mm | Inferred from the "-03-" prefix and typical proportions for a 6mm bore with keyway. The O.D. provides adequate wall strength for clamping. |
| Width / Length | Approx. 10 - 15 mm | Standard length for a hub of this diameter, sufficient to accommodate the clamping screws and ensure torsional stability. |
| Clamping Mechanism | Single or Dual Radial Clamping Screws | The "-02-" variant specifies a clamping style, most commonly one or two socket head set screws (e.g., M3 or M4 size) tightened radially against the shaft. |
| Primary Material | High-Strength Aluminum Alloy (e.g., 6061-T6) | Standard for an optimal strength-to-weight ratio, ease of machining, and good corrosion resistance. Stainless steel (303/304) is a less common alternative. |
| Finish | Black Anodized (Typical) | Provides enhanced surface hardness, wear resistance, and a non-reflective, corrosion-resistant finish. |
| Weight | Approx. 3 - 8 grams | Extremely lightweight due to aluminum construction and compact dimensions. |
| Key Feature | Keyed & Clamped Dual Security | Combines a parallel key for positive torque transmission and resistance to rotation with radial clamping screws to eliminate axial play and ensure a tight fit on the shaft. This prevents fretting and slippage under high torque or reversing loads. |
| Runout / Concentricity | < 0.02 mm TIR | Precision-machined to ensure minimal radial runout, critical for high-speed and smooth operation. |
Primary Application Scenarios
This component is vital in applications requiring precise, reliable, and backlash-free torque transmission on small-diameter shafts.
Precision Robotics & Automation:
Timing Belt Drive Hubs: Used to securely attach GT2, HTD, or MXL profile timing pulleys to 6mm motor or idler shafts in robotic joints, CNC axis drives, and linear actuators. The keyway prevents timing errors under high acceleration.
Small Motor & Encoder Integration:
Gearbox & Encoder Mounting: Secures small gears to the output shaft of miniature DC or stepper motors in servo systems. Also used to mount optical encoder disks or magnetic encoders to motor shafts with precise angular alignment.
3D Printer & Desktop CNC Drives:
Extruder & Motion Pulley Hubs: A critical component in high-performance 3D printers, attaching drive pulleys to the smooth rods or lead screws of the X, Y, and Z axes. The dual clamping and keying ensure no layer shift due to pulley slippage.
Optical & Laboratory Positioning Equipment:
Mirror & Lens Mount Drives: Used in rotary stages and optical beam steering mechanisms where a timing belt is used for precise angular positioning. The hub ensures perfect synchronization between the motor and the output stage.
Light Industrial Conveyors & Feeders:
Sprocket & Roller Drives: Attaches small sprockets or rollers to shafts in packaging machines, light conveyor sections, and indexing tables where synchronized motion is required.
Global direct procurement guarantee
All products are purchased directly from overseas original manufacturers or authorized channels, 100% guaranteed genuine quality, sufficient spot inventory, and comprehensive model coverage
Quality Commitment
Each product has been tested by our technicians, providing 12-month long warranty, worry-free after-sales
Flexible procurement plan
- Bulk order enjoys Friendship discount (2 pieces or more can be applied)
- Long-term cooperative customers can apply for priority supply
Full service support
7×24 hours technical consultation, from selection guidance to installation and commissioning to provide full life cycle service (paid)
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On the basis of the same quality, we provide:
- More competitive price system
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