KNOBS & HANDLES 207

Product catalog summary

Specifications:
The lever body is made from glass-fibre reinforced polyamide-based technopolymer, resistant to solvents, oils, greases, and other chemical agents. It features a grey-black matte finish. The push button is made from technopolymer in Ergostyle colors with a glossy finish. The clamping element includes a retaining pin made from glass-fibre reinforced technopolymer in black, with knurling for easier initial tightening, and an AISI 302 stainless steel return spring. Assembly involves a brass boss with a tapped blind hole. Special executions are available on request, such as an orange-colored lever body.

Features and Applications:
The lever is particularly suitable for situations with limited turning angles due to space constraints. It offers absolute electric insulation, no visible steel parts subject to rust, and a more comfortable lever release compared to other adjustable handles with metal retaining screws.

Stress Resistance:
The handle is designed for repetitive clamping operations, withstanding over 100,000 tightening cycles under a force of 490 N, as demonstrated in laboratory tests.

Instructions for Use:
To clamp, lift the lever to disengage the clamping device toothing and return it to the start position. Releasing the lever automatically engages the toothing via the return spring.

Ergonomy and Design:
The lever's slightly arched shape and ergonomic terminal enlargement provide a comfortable and safe grip, with a natural thumb rest on the push button.

Adjustable Clamping Lever ERX Female:
The document includes a table with detailed specifications for various part references, including dimensions and mounting hole sizes.

Catalog excerpts

Adjustable Clamping Lever ERX Female NUMBER OF TIGHTENINGS KNOBS & HANDLES • Lever body Glass-fibre reinforced polyamide based (PA) technopolymer. Resistant to solvents, oils, greases and other chemical agents. • Colour Grey-black, matte finish. • Push button Technopolymer in Ergostyle colours, glossy finish. • Clamping element with retaining pin Glass-fibre reinforced technopolymer, black colour, with knurling on the protruding part to make initial tightening easier. AISI 302 stainless steel return spring. • Assembly Brass boss, tapped blind hole. Special executions on request (For sufficient quantities) Lever body in orange colour. Features and applications Particularly suitable when the lever turning angle is limited owing to lack of space. Compared to other types of adjustable handles with metal retaining screw this solution offers: / absolute electric insulation for the operator's hand / no visible steel parts subject to rust / more comfortable lever release. Stress resistance Adjustable handles are generally used for repetitive clamping operations sometimes with very high-frequency. Therefore, the stress resistance (i.e. the resistance to repeated tightening cycles) of the handle unit is particularly important and, especially, the strength of the toothed element which transmits the tightening force from the handle to the threaded element (boss or stud). In fact, the results of several laboratory tests, performed with a special instrument that simulates the most severe use conditions, have shown that e.g. the adjustable handle can withstand without yielding more than 100,000 tightening cycles, under the action of a force of 490 N (see graphic). Instructions of use For clamping, lift the lever to disengage the clamping device toothing and bring it back to start position. By releasing the lever, the return spring automatically engages the toothing. Ergonomy and design The slightly arched shape of the lever and the ergonomic terminal enlargement give the operator a comfortable and safe grip and make the design of the handle more elegant, while the thumb rests naturally on the push button.

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