Shijiazhuang Jun Zhong Machinery Manufacturing Co., Ltd, is set research and development, production
and sales in one of the high-tech manufacturers, the main products include:
① Integral rope groove drum: rope drums with grooves cut directly into them (with or without bolted or welded flanges, as required).
Winch drum with flange, the LBS groove is cut directly into the body of the drum, according to customers’ requirements, the flanges are either welded or screw-bolted. groove geometry is determined by rope construction, diameter and length, and by application. the drum has the required mounting dimensions for the actual operating conditions.
② Split rope groove drum: grooved split sleeves that can be placed over smooth, ungrooved drums – good for retrofitting and for applications where drums may require replacing.
Split-sleeve system consists of a pair of outer shells that are bolted or welded onto a smooth drum to provide a grooving pattern，The split sleeve is composed of helical groove and parallel groove, the grooving in split sleeves is engineered to match the specific rope construction, diameter and length, and to suit the application.
spooling device by adjusting the sprocket chain to give the correct ratio between coils of rope on drum to pitches on the lead screw, perfectly controlled spooling is guaranteed regardless of the number of layers on the drum.
3. All kinds of onshore and offshore winch: including offshore platform crane winch, rig winch, tower crane winch, mine winch and so on.
4. Trailer traction seat（fifth wheel）: including 30Q cast steel traction seat, 50#, 90# cast steel traction seat, ductile cast iron traction seat, steel plate stamping traction seat, etc.
5. Precision gear: including herringbone gear, large diameter and large modulus gear, bevel gear, helical gear, worm gear, etc.