An overview of MENTOR’s control knobs and turning knobs

A near 100-year legacy in electronic components and "state-of-the-art" competencies in opto design mean we sometimes forget that MENTOR is also one of the world’s largest manufacturers of control knobs.

MENTOR's wide range of plastic and aluminium knobs offers an aesthetic and ergonomic solution for every application, from instrument knobs and potentiometer knobs to wing knobs, collet knobs, pointing knobs and toggle knobs, locking knobs, dual concentric shaft knobs and high precision turning knobs. There are many styles of knob in both black and silver, plastic and aluminium, and MENTOR's rotating knobs are available with digital and analogue controls.

MENTOR continue to introduce new knob systems that combine their opto and mechanical specialties as well as deliver millions of their traditional mechanical products in their boringly reliable and high quality manner! The image to the right – showing the control knob of Gibson's flagship guitar - demonstrates how MENTOR can combine a high quality instrument knob with their ground-breaking innovations to harness LED light.
control knob of Gibson's flagship guitar

MENTOR's Modular Systems of Plastic Turning Knobs with Collet Fixing

modular plastic turning knobs with collet fixing
modular plastic turning knob systems

MENTOR offers two separate ranges of modular plastic turning knob systems. Each range consists of various diameters of knobs (between 11.8mm and 48.0 mm) and shaft sizes of 3, 4, 6, 8 & 10mm are covered. The knobs are finished in black (custom colours are possible) and can be supplied either with or without line markings. All of these knobs are standard, stocked parts (except custom-coloured knobs) and are thus available “off the shelf” with low MOQs.

Caps are ordered separately and offered in a choice of six colours. Both ranges include a comprehensive selection of accessories such as nut covers (with or without pointers), pointer dials and base plates etc. It is worth noting that certain versions of these knobs can be mounted one above the other to allow the operation of rotary switches with dual concentric shafts.

rotary switch with dual concentric shaft

Digital & Analogue Rotating Knobs

digital rotating knobs
analogue rotating knobs

Digital Rotating Knobs

These MENTOR Digital Rotating Knobs are for use with precision potentiometers or other devices requiring rotating knobs.

Analogue Rotating Knobs

MENTOR’s range of Analogue Rotating Knobs is designed for analogue instrumentation applications.
black plastic turning knobs with collet fixing
black plastic rotating knobs with screw fixing

Mat or gloss-finish black plastic turning knobs with Collet Fixing

These black plastic knobs have a fluted design to ensure good grip. The mat-finished versions are manufactured from PBT whilst the gloss version use ABS. Various diameters between 12mm and 28mm are available and a choice of six colours of caps is offered.

Plastic Rotating Knob System with Setscrew Fixing

These Rotating Knobs are secured using a Side-Screw fixing. MENTOR provide many different size and shape options.

Plastic Wing-Knobs, Pointers, Locking Knobs and Knurled Knobs

plastic wing knobs with collet fixing
plastic pointer knobs with top-screw and cap fixing
plastic locking knobs with top-screw and cap fixing
plastic knurled knobs with top-screw and cap fixing

Plastic Wing Knobs with Collet Fixing

MENTOR’s Plastic Wing-Knobs are designed for Collet Fixing; this allows for top caps to be specified in a choice of six different standard colours. MENTOR offers four size variations as standard (diameters between 15mm and 35mm) and there are versions to fit 3mm, 4mm and 6mm shafts.

Plastic Pointer Knobs with “Top-Screw & Cap” Fixing

MENTOR offers many different Pointer sizes, shapes, heights, diameters etc.

Plastic Locking Knobs with “Top-Screw & Cap” Fixing

MENTOR’s range of Plastic Locking Knobs use a “Top-Screw & Cap” Fixing. The chosen setting can be locked in place.

Plastic Knurled Knobs with “Top-Screw & Cap” Fixing

MENTOR’s range of Plastic Knurled Knobs with “Top-Screw & Cap” Fixing are designed for applications that require a comfortable and secure grip for fine adjustments.

High-Precision Rotating Knobs

high-precision aluminium rotating knobs
high-precision 10:1 drive converter

Aluminium Rotating Knobs with Dual Coarse/Fine Adjustment

These MENTOR Aluminium Rotating Knobs provide a Dual Coarse/Fine Adjustment for applications requiring very precise adjustment. The fine adjustment to coarse adjustment is 6:1.

High-Precision 10:1 Drive Converter

This MENTOR componenet is a 10:1 drive converter, which converts a swith operation from 1:1 to 10:1; allowing extremely fine adjustment.

Aluminium Rotating Knobs

aluminium rotating knobs with top-screw and cap fixing
aluminium rotating knobs with screw fixing
aluminium rotating knobs for screwdriver adjustment

Aluminium Rotating Knobs with “Top-Screw & Cap” Fixing

MENTOR’s range of Aluminium Rotating Knobs with “Top-Screw & Cap” Fixing are available in many different shapes and sizes.

Aluminium Rotating Knobs with “Side-Screw” Fixing

MENTOR’s Aluminium Rotating Knobs feature “Side-Screw” Fixings. Two finishes are offered – natural and black. Many different sizes and shapes are offered.

Aluminium Rotating Knobs for Screwdriver Adjustment, with “Side-Screw” Fixing

MENTOR’s range of Aluminium Rotating Knobs for Screwdriver Adjustment have a “Side-Screw” Fixing. The range includes various shapes and dimensions.

Aluminium Wing and Pointer Knobs

aluminium wing knobs with screw fixing
aluminium pointer knobs with top-screw and cap fixing

Aluminium Wing Knobs with “Side-Screw” Fixing

MENTOR’s Aluminium Wing Knobs with “Side-Screw” Fixing are available in two finishes: black or natural. Different sizes are also offered.

Aluminium Pointer Knobs with “Top-Screw & Cap” Fixing

MENTOR’s Aluminium Pointer Knobs with “Top-Screw & Cap” Fixing are available in natural or black surface finishes.

Accessories

Shafts, Sleeves, Shaft Couplings and Friction Clutches

MENTOR offers a very wide range of Accessories, including: Shafts, Sleeves, Shaft Couplings and Friction Clutches.
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