HSK rolled ball screw is made by a rolled process of the screw shafts instead of an expensive grinding process. When axial play is minimized in conventional screw-nut assemblies, the actuating torque becomes excessive and the operation is not smooth. The axial play in HSK precision ball screw may be reduced to zero by preloading and a light smooth operation is still possible. Therefore, both low torque, and high stiffness can be obtained simultaneously for the linear feeding system comparing with traditional screws. HSK ball screw have gothic arch groove profiles which allow these conditions to be achieved. At the same time, each kind of type has all be standardized, may carry on the best choice according to the use. 1. High Accuracy HSK ball screws together with screw shafts and nuts undergo precision screw processing, assembly and inspection in a constantly controlled environment, ensuring high precision and quality. The accumulated lead error for Grade C7 and C10 already has been standardized, can be used to the widespread use. HSK manufactures the lead accuracy grade C7 that matches the quality of the C5 according to the customer request. The lead error of each 300mm length. They are 0.018 for C5, 0.05 for C7 and 0.021 for C10. 2. Surface Roughness: below R max 0.8s The surface Roughness is below R max 0.8s of Screw shaft. 3. High Durability Rigidly selected materials, intensive heat treating and processing techniques, backed by years of experience, have resulted in the most durable ball screws manufactured. 4. Competitive Price HSK rolled ball screws are made by a rolled process of the screw shaft in stead of an expensive grinding process. After a precision rolled process, induction heating hardening or carbonizing hardening process comparing with traditional screws, the price is cheaper. 5. Short Lead Time HSK has made available our standard stock series to meet development needs and trends of industries. HSK insures short lead time for users. 6. High Dustproof Effect Has loaded the small labyrinth type seal packing collar in the nut or brushes type the seal packing collar, the low friction and the high dustproof effect, enhanced the service life of ball screws. Material and Heat Treatment Item | Material | Heat Treatment | Hardness | Screw | SCM450 / S55C | Induction Heating Hardening | HRC58 ~ 62 | Nut | SCM415 | Carbonizing | HRC58 ~ 62 | Steel Ball | SUJ2 | | HRC60° UP |
Standard Ball Screw Screw Shaft Diameter | Lead | 4 | 5 | 10 | 14 | 500 1000 | 500 1000 | | 16 | | 500 1000 1500 2000 | | 20 | | 500 1000 1500 2000 | | 25 | | 1000 1500 2000 2500 | 1000 1500 2000 2500 | 32 | | 1000 1500 2000 3000 | 1000 1500 2000 3000 | 40 | | 1000 2000 3000 4000 5000 | 1000 2000 3000 4000 5000 | 50 | | 1000 2000 3000 4000 5000 | 1000 2000 3000 4000 5000 |
Shaft Accuracy Shaft Dia.\ Accuracy | C7 | C10 | 1404 1405 1605 1610 2005 2505 | 0.04mm | 0.10mm | 2510 3205 3210 | 0.07mm | 0.17mm | 4005 4010 5010 | 0.10mm | 0.20mm |
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