Lever handle HS10 stem black

A rotating lever handle makes more difference to the wrist than you might think. HS10 with a stud has the grip mounted on a threaded steel stud so that it rotates freely around its own axis; when you move the lever through an arc the handle follows the angle of the hand instead of forcing the grip to slide in the palm. On movements repeated hundreds of times per shift that is the difference between a machine that follows along and a sore wrist.

The series covers six designs that are picked as a variant on the product page. The threads span from M6 to M12, the length of the grip from 39 to 90 mm, the largest diameter from 16 to 25 mm and the stud length from 10 to 20 mm. The smallest sizes suit controls on instruments and smaller machines; the larger ones sit on feed levers and cranks where the whole hand works. Exact dimensions for each design are given in the dimension sheet.

The grip is injection molded in black PA6 with a matte surface, the stud is in zinc plated steel. The combination is proven: the nylon gives an impact resistant and comfortable grip that stands up to oils and greases, while the steel stud takes the thread forces and the zinc layer protects against corrosion in a normal indoor environment. In damp or chemically aggressive environments the zinc plating is not enough in the long run; weigh in the environment when you choose.

Choosing a rotating instead of a fixed grip is basically a working environment question. Fixed handles work well on levers used now and then, but with frequent repetition a sliding friction builds up between hand and grip that over time gives blisters and tired wrists. The rotating grip removes the friction completely; the hand stays still while the handle turns.

Mounting is as simple as it gets: screw the stud into the threaded hole of the lever arm and tighten. The stud lengths are matched to each thread dimension, from 10 mm on M6 up to 20 mm on M10 and M12, which gives full thread engagement without the stud bottoming out for no reason. A drop of thread locker on the steel stud is fine since the liquid never comes into contact with the plastic; the joint is steel against steel.

Rotating lever handles typically sit on feed cranks and handwheels on lathes and milling machines, on cross tables and pillar drills, on clamping devices that are operated often and on hand driven feeds in automation equipment. Hatches and doors that are opened with a sweeping movement also benefit from a grip that rotates. What they all have in common is the repeated hand movement where the rotating grip makes the job comfortable.

The matte surface gives a secure grip even with oily fingers and hides scratches and fingerprints better than a glossy one. The series is also made with a glossy surface, so there is room to match the other controls on the machine.

HS10 with a stud is the neatest of the three stud series; HS20 and HS30 offer coarser grips with the same rotating function. If you prefer fixed mounting, HS10 is also available with a plain hole for press fit and with a threaded bushing, all in the same design language. The standard pack holds 200 handles for most sizes; one of the versions is packed in 100.

The zinc layer on the stud has a practical everyday advantage too: the threads go in and out easily even after several years, and you avoid the grinding resistance that untreated steel develops. Replacements and later adjustments can therefore be done quickly during a short stop.

Do you have a specific application in mind? We will help you choose the right size.