junaspin GmbH
About us
junaspin is the expert for threads.
In addition to trapezoidal threads, high-helix threads and metric threads, the range also includes ball threads, round threads, ACME threads, buttress threads and many other thread types.
But junaspin doesn't just supply the lead screw and the associated nut. The program is supplemented with everything that is needed to build a complete lead screw drive, including wipers, a special spindle grease, spindle bearings and linear guides. If desired, these individual parts can also be completed as a complete linear axis.
The products are used in a wide variety of applications: in general mechanical engineering, in traffic technology, in the solar industry, in packaging and filling machines, in medical devices, in door systems, in closing technology, in grippers, in handling systems, etc.
Products & services
Wiper for trapezoidal threads
Compared to ball screws, lead screws are less susceptible to dirt. However, the accumulation of dirt on the screw should of course be avoided. If dirt works its way into the nut, wear usually increases. In combination with lubrication, this can lead to the dirt particles combining with the lubricant and creating an "abrasive paste". Ideally, the spindle should be completely protected with a bellows or another design measure. For applications where this is not possible for reasons of space or cost, the use of a wiper for trapezoidal threaded spindles is a conceivable alternative. junaspin wiper for trapezoidal threaded spindles Cast metal wiper with rubber wiper lip Material: Wiper made of NBR70 (+-5 Shore) Other sealing materials (Cr, FKM, EPDM, VMQ etc.) on request Housing made of steel Other housing materials (aluminum, V2A, V4A) on request junaspin will be happy to help you select a wiper. Based on our experience, we can also assess whether the use of a dry-running system is possible in your application.
High helix thread spindles
High helix thread spindles are mostly used as movement or drive threads. The main feature of these threads is that the pitch is very large in relation to the diameter. This means that a small radial movement can be converted into large axial movements. In order to increase the pitch of the thread, either the thread profile is widened or multi-start threads with several threads running in parallel are used. The term high-helix thread cannot be used to precisely define the thread shape. High helix thread nuts are primarily used when large strokes have to be completed in a short time or when self-locking is not desired for technical reasons. Compared to trapezoidal screw drives, the efficiency is significantly higher. However, due to the large gradient, a higher drive torque is also required.