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Handles & Knobs

Handles & Knobs

Machine handles, pull handles, star knobs and adjustable levers.

Also searched as: star knobspull handlesadjustable handlesclamping leverst-handles

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About handles & knobs

Handles and knobs are operator interfaces used to manipulate machinery, fixtures, and enclosures. This category encompasses machine handles, pull handles, star knobs, and adjustable levers, each designed for specific ergonomic and functional requirements. Machine handles, often fixed or revolving, facilitate linear or rotational movement on machine tools. Pull handles provide a grip for opening, closing, or carrying, frequently found on doors, drawers, and cases. Star knobs, characterized by their multi-lobed shape, offer a high-torque grip for clamping or fastening applications, commonly featuring threaded studs or inserts. Adjustable levers provide a quick and repositionable clamping solution, often incorporating a ratchet mechanism to allow lever repositioning without altering the clamping force. Key selection criteria include grip style, mounting type (e.g., threaded stud, threaded bore, through-hole), thread size and pitch (e.g., M6x1.0, 1/4-20 UNC), shank length, and overall dimensions. Common materials include thermoplastics (e.g., polyamide, polypropylene) for lightweight and corrosion resistance, aluminum for strength and aesthetics, and steel or stainless steel for high strength and durability, with finishes such as matte, polished, or powder-coated.

How to choose

Selecting the appropriate handle or knob begins with determining the required function: manipulation, pulling, clamping, or adjustment. Next, consider the mounting interface; does it require a male thread (stud), female thread (bore), or a through-hole for a fastener? Specify the exact thread size and pitch or hole diameter. Evaluate the ergonomic requirements based on the force needed and operator comfort, influencing the grip style and size. Finally, choose the material and finish based on environmental conditions, such as exposure to chemicals, temperature, or UV, and the aesthetic requirements of the application. For clamping, assess if a fixed or adjustable lever is more suitable for repetitive or space-constrained operations.