SD Type QD Bushings
SD Type QD (Quick Detachable) bushings are precision-engineered components used to mount pulleys, sprockets, or sheaves onto shafts in power transmission systems. Featuring a flanged, tapered design with a 3/4-inch-per-foot taper, they ensure a secure, positive clamp when cap screws are tightened. The split flange allows easy installation and removal without shaft damage. SD bushings accommodate various bore sizes, typically ranging from 1/2 to 2 inches or metric equivalents, and include cap screws and lock washers for reliable fastening.
SD Type QD (Quick Detachable) bushings are precision-engineered components used to mount pulleys, sprockets, or sheaves onto shafts in power transmission systems. Featuring a flanged, tapered design with a 3/4-inch-per-foot taper, they ensure a secure, positive clamp when cap screws are tightened. The split flange allows easy installation and removal without shaft damage. SD bushings accommodate various bore sizes, typically ranging from 1/2 to 2 inches or metric equivalents, and include cap screws and lock washers for reliable fastening. Their interchangeability and robust steel or cast iron construction make them ideal for industrial applications requiring flexibility and durability.
SD Type QD Bushing Dimensions
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| QD Bushing Type: | SD | |
| Dimensions(in): | A | 1/2 |
| B | 2.187 | |
| D | 3-3/16 | |
| E | 1-5/16 | |
| F | 1-1/4 | |
| G | 3/16 | |
| L | 1-13/16 | |
| Bolt Circle (in): | 2-11/16 | |
| Stock Bore Range(in): | Min. | 1/2 |
| Max. | Standard Keyway 1-11/16 Shallow Keyway 1-15/16 No Keyway 2 | |
| Cap Screws Included: | No. | 3 |
| Thread | 1/4-20 | |
| Length (in) | 1-7/8 | |
| Set Screw Size: | 1/4 | |
| Wrench-Torque (in-Ibs): | 108 | |
| Approx.Weight (Ibs): | 1.5 | |
SD Type QD Bushing Advantages
SD Type QD (Quick Detachable) bushings offer several advantages in power transmission applications, making them a popular choice for mounting sprockets, pulleys, and sheaves. Here are the key benefits:
- Ease of Installation and Removal: SD Type QD bushings are designed for quick and straightforward installation, requiring only basic tools like an Allen wrench for tightening set screws and cap bolts. Their split, tapered design allows them to slide onto the shaft easily and clamp securely without complex procedures. Removal is equally efficient, as loosening the bolts releases the bushing, saving significant time during maintenance or component replacement, especially in high-uptime industrial environments.
- Strong Clamping Force: The tapered, split flange of SD Type QD bushings provides a powerful, positive clamp on the shaft, ensuring a secure fit that resists slippage under high torque. This robust grip distributes force evenly, reducing wear on both the bushing and shaft. It’s ideal for demanding applications like conveyors or heavy machinery.
- Versatility in Mounting Configurations: SD Type QD bushings support both conventional (flange outboard) and reverse (flange inboard) mounting, offering flexibility to adapt to various equipment designs. This versatility simplifies integration into existing systems or new setups, accommodating different shaft sizes and component types.
- Interchangeability Across Manufacturers: These bushings follow an industry-standard design, allowing compatibility with sprockets, pulleys, and sheaves from different manufacturers. This interchangeability simplifies sourcing and inventory management, as users can mix and match components without worrying about proprietary designs.
- Reduced Shaft Damage: The even clamping pressure of SD Type QD bushings minimizes stress concentrations on the shaft, unlike set-screw or keyway-only systems that can cause scoring or deformation. This gentle yet firm grip extends the lifespan of both the shaft and the bushing, lowering maintenance costs and preventing unexpected failures in critical machinery over time.
SD Type QD Bushing Applications
SD Type QD (Quick Disconnect) bushings are widely used in industrial applications for their ease of installation, secure mounting, and versatility. Here are key applications:
(1) Sprocket Mounting in Conveyor Systems: SD Type QD bushings securely attach sprockets to shafts in conveyor systems, ensuring reliable power transmission. Their quick-disconnect design simplifies maintenance and reduces downtime in industries like manufacturing and logistics.
(2) Pulley Systems for Power Transmission: These bushings mount pulleys in belt-driven systems, providing strong clamping force. They’re ideal for HVAC, agricultural equipment, and industrial machinery, allowing easy adjustments and replacements.
(3) Gearbox and Motor Connections: SD QD bushings connect gearboxes or motors to driven components, offering precise alignment. Their tapered design ensures tight fits, reducing vibration in heavy-duty applications like mining or construction.
(4) Sheave Installation in Cranes and Hoists: Used to mount sheaves in lifting equipment, SD QD bushings provide robust shaft attachment. Their split-flange design enables fast installation and removal, critical for maintenance in high-load environments.
(5) Timing Belt Systems in Automation: In automated machinery, these bushings secure timing pulleys, ensuring synchronized motion. Their interchangeability and strong grip support high-precision tasks in robotics and packaging industries.
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Additional information
| Edited by | Yjx |
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