Bushings and Hubs

The taper lock bush, also referred to as a taper bush or taper fit bush, is a locking mechanism commonly used in power transmission drives for locating pulleys, sprockets, and couplings to shafts. The taper-lock bushing is pre-bored and keyed to match the required shaft and keyway diameters. Weld-on hubs are essential parts designed for secure and permanent attachment to power transmission components facilitating the transfer of motion and power. Crafted with precision, our weld-on hubs ensure a straightforward welding process, resulting in a durable and long-lasting connection.

Types of Bushings and Hubs

Taper Lock Bushing

Split Taper Bushing

QD Bushing

XTB Bushing

FHPK Bushing

Split Taper Weld-on Hub

QD Weld-on Hub

XTH Weld-on Hub

Taper Lock Weld-On Hub

Taper Bore Bolt-On Hub

Taper Lock Adapter

Splined Hubs

What are Bushings and Hubs?

The bushing is a locking mechanism commonly used in power transmission drives for locating pulleys, sprockets, and couplings to shafts. The bushing is pre-bored and keyed to match the required shaft and keyway diameters. Weld-on hubs are essential parts designed for secure and permanent attachment to power transmission components facilitating the transfer of motion and power. Crafted with precision, our weld-on hubs ensure a straightforward welding process, resulting in a durable and long-lasting connection. If you are looking for a bushing and weld-on hub, please consult our professional staff for assistance on how to properly maintain and install it. This ensures optimal performance and extends its lifespan. Check out our products, as AGKNX provides the perfect solutions tailored to your needs.

Applications of Bushings and Hubs

Bushings and weld-on hubs are widely used mechanical components in various industrial applications, particularly in power transmission systems. Together, they provide a reliable, flexible, and efficient method for mounting rotating components onto shafts. Below are some key applications of bushings and weld-on hubs:

1. Power Transmission Systems

Sprockets and Pulleys: Taper bushes are commonly used to secure sprockets, V-belt pulleys, and timing belt pulleys to shafts. Weld-on hubs enhance this setup by providing a robust base that can be welded onto these components, ensuring a strong and concentric connection for transmitting torque in machinery like conveyors, mixers, and pumps.
Chain Drives: In chain-driven systems, weld-on hubs paired with taper bushes allow plate sprockets to be securely mounted, facilitating smooth power transfer in applications such as material handling equipment and agricultural machinery.

2. Fan Rotors and Ventilation Systems

Weld-on hubs are welded into fan rotors in air conditioning, ventilation, and exhaust systems. The bushings ensures the rotor is firmly attached to the shaft, enabling efficient rotation and airflow management under varying operating conditions.

3. Conveyor Technology

Weld-on hubs with bushings are used to mount pulleys or rollers in conveyor belts. This combination provides a quick and adjustable connection, making it easier to replace or reposition components during maintenance in industries like mining, manufacturing, and logistics.

4. Agitators and Mixers

In industrial mixing equipment, weld-on hubs are attached to impellers or agitator blades, while taper bushes lock them onto the drive shaft. This setup ensures reliable torque transmission and stability, even under high loads or in harsh environments like chemical processing plants.

5. Agricultural Machinery

Equipment such as grain augers, combines, and harvesters use taper bushes and weld-on hubs to connect drive components (e.g., pulleys or gears) to shafts. The system’s ease of installation and removal simplifies repairs in the field, reducing downtime.

6. Steel and Welded Constructions

Weld-on hubs are integral in custom steel fabrications where components like plate wheels or custom pulleys need to be welded and then mounted onto shafts using bushings. This is common in heavy-duty machinery and structural applications.

7. Industrial Machinery

From compressors to woodworking machines, bushings and hubs are used to mount various rotating elements. Their versatility accommodates different shaft sizes and allows for easy adjustments or replacements without extensive machining.

Bushings and Hubs for Sprockets

Bushings and Hubs for Pulleys

Taper Lock Bushings vs. QD Bushings

QD Bushings: Quick detachable bushings (or QD) feature a flange on the outside diameter which is often used to secure the bushing to a sprocket or pulley. More distinctly, QD bushings also feature a split through the flange and taper which makes installation and removal much easier while also improving the holding power by tightening cap screws. A QT bushing is a specific size of QD bushing which features reverse mounting and, unlike most QD bushings, do not have a setscrew over the key. Other QD bushing sizes include: SD, SK, J, F, E, SF, SDS, SH, and JA.

Like QD bushings, taper-lock bushings also feature a split side for enhanced clamping power. Unlike QD bushings, taper-lock bushings gradually taper along the length-thru-bore in order to provide an even tighter fit on the drive shaft. This tapering allows for a shorter length-thru-bore and narrower sprocket hubs. Taper-lock bushing sizes include: 1008, 1108, 1210, 1215, 1310, 1610, 1615, 2012, 2517, 2525, 3020, and 3030.

The main difference between the two is that the QD bushing has a flange around the outside diameter. The taper-lock bushing has straight sides on the OD which is meant to mount flush.

Feature	Taper-Lock Bushings	QD Bushings (Quick Detachable)
Design Principle	Uses a tapered design that locks into a matching hub	Features a split flange and taper for quick removal
Installation	Requires pressing or tightening screws to seat	Bolts tighten the bushing onto the shaft easily
Removal	Requires removal of screws and sometimes a puller	Quick removal by loosening bolts, no puller needed
Mounting Style	Keyed to the shaft with a taper fit	Keyed with a flange and split design
Ease of Installation	Moderately easy, requires precise alignment	Very easy due to split design and flange
Ease of Removal	More time-consuming, may need tools	Fast and simple, designed for quick detachment
Torque Transmission	High torque capacity due to tight taper fit	High torque capacity with secure flange clamping
Shaft Size Range	Wide range of shaft sizes accommodated	Wide range, often slightly broader compatibility
Reusability	Reusable if not damaged during removal	Highly reusable due to easy removal process
Cost	Generally cost-effective	Slightly higher cost due to design complexity
Applications	Common in pulleys, sprockets, and couplings	Widely used in pulleys, sheaves, and gearboxes
Maintenance	Requires periodic checking of screw tightness	Minimal maintenance, easy to inspect and adjust
Alignment Sensitivity	More sensitive to misalignment during installation	Less sensitive due to flange and split design
Space Requirement	Compact design, no external flange	Requires slightly more radial space due to flange
Load Distribution	Evenly distributed along the taper	Evenly distributed with flange support