Martin SH 1-1/4 Quick Disconnect Bushing

The Martin SH 1-1/4 Quick Disconnect (QD) Bushing is a versatile and reliable component designed for mounting pulleys, sprockets, sheaves, and other power transmission elements to shafts in industrial applications. Manufactured by Martin Sprocket & Gear, this bushing features a split tapered design that allows for easy installation and removal without the need for specialized tools, reducing downtime during maintenance. It is constructed from high-quality ductile iron for durability and resistance to wear, making it suitable for high-torque environments such as conveyor systems, pumps, fans, and agricultural machinery. Key benefits include its quick disconnect capability, which enables rapid component changes, and its ability to provide a secure, concentric grip on the shaft to minimize vibration and extend equipment life. Compared to traditional bushings, the QD design offers superior adjustability and reusability, though it may require periodic inspection for bolt torque to prevent slippage. This specific model has a 1-1/4 inch bore, standard keyway, and includes three cap screws for assembly. Based on the provided images, the bushing appears to be in new condition, unused, and comes in its original packaging with mounting hardware and a warning label. No serial number is visible on the faceplate, and there are no attached parent/child assets like sensors. For detailed specifications, refer to the Martin QD Bushing catalog (available at https://www.martinsprocket.com/docs/default-source/catalog/bushings/qd-bushings.pdf). Estimated market price for a new unit is $15-25 USD, based on recent online listings from suppliers like Grainger and MSC Industrial.