Shenzhen Dawlish Precision Machinery Co., Ltd

WDS Zero-backlash Drive Technology<br />
WDS is a brand under Dawlish Precision Machinery Co., Ltd, featured by NC rotary table 4th axis series product. WDS roller drives assist your equipment to realize better speed and precision control, withstand heavy cutting force, overcome external disturbances, and greatly improve transmission efficiency and system stability. Positioning accuracy reaches as good as 10 seconds.<br />
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Theory of Operation of the Roller Driver<br />
The Roller Driver uses the roller gear mechanism, one of the finest motion control mechanisms available. The unit is constructed from an input shaft (the roller gearcam) and a turret (output shaft) fitted with roller followers. The roller followers are preloaded against a screw-like input shaft to completely eliminate backlash. Our proprietary adjustment mechanism provides optimum preload. The roller followers planted in the turret use internal roller bearings to transfer torque while rotating. This ensures zero backlash, outstanding precision, and excellent efficiency without causing wear, while providing long-term consistent accuracy.<br />
Accuracy is consistent with no maintenance even after 4.5 million operation cycles. Long-term use is possible without any mechanical maintenance.<br />
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Features<br />
Use of roller gear mechanism, No backlash or lost motion.<br />
No wear, and maintenance is required.<br />
Excellent price performance compare to worm gear mechanism.<br />
Extended high accuracy even after 5 million indexes.<br />
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C170C200C250C315C400<br />
Table Diameter (mm)Ф170Ф200Ф250Ф315Ф400<br />
Table Bore Diameter (mm)Ф65H7Ф75H7Ф110H7Ф150H7Ф180H7<br />
Center Height (mm)150165210255300<br />
Gear Ration1/601/601/601/601/60<br />
Max Table Speed (rpm)5050505050<br />
Indexing Accuracy (arc.sec)±15±10±10±10±10<br />
Repeatability (arc.sec)95555<br />
Production Weight (kg)70100170280410<br />
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Loading CapacityC170C200C250C315C400<br />
Vertical Allowable Load (kg)7090110160220<br />
Horizontal Allowable Load (kg)145180225315450<br />
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Allowable Axial Load (n)1042212918278003157256943<br />
Continuous Holding Torque (n.m)1512574756901247<br />
Maximum Output Torque (n.m)25847190013322407<br />
Allowable Bending Moment (n.m)489775198931957321<br />
Allowable Inertia Moment (kg.m2)0.51.01.84.09.0<br />
*(Maximum table speed and holding torque values are given for a FANUC motor. Maximum output torque should not exceed 10 seconds with 20% duty)<br />
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OptionsC170C200C250C315C400<br />
Hydraulic Brake Torque (n.m/6Mpa)32040089010802340<br />
Built-in Rotary Joint (number of ports)66666<br />
 External Rotary Joint (number of ports)6+16+18+18+18+1<br />
Output Rotary EncoderRON/RCN200<br />
(HEIDENHAIN)RON/RCN201<br />
(HEIDENHAIN)RON/RCN202<br />
(HEIDENHAIN)RON/RCN203<br />
(HEIDENHAIN)RON/RCN204<br />
(HEIDENHAIN)<br />
Service<br />
1. Inquiry (through Alibaba or email) replied within 24 working hours. <br />
2. Customization on the equipment, its accessories (rotary table, motor, etc. ) is available. *Please discuss with us regarding your specific requirements. <br />
3. Factory visit is open to our important (potential) clients. <br />
4. On-site support is open to our important (potential) clients. <br />
5. Within two year guarantee time, faulty product could be replaced for free (no one found so far though )<br />
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FAQ<br />
About Lead Time<br />
Q: What's the lead time after placing order? <br />
A: Normally it takes about 30 days for production. But it varies depending on the factory's real-time schedule and the customization level of your requirement. <br />
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About Payment Term<br />
Q: What's the Payment Term? <br />
A: T/T, Western Union preferred. Other payment terms are optional. <br />
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About Delivery term: <br />
Q: What's the delivery term? <br />
A: Mainly FOB, CFR & CIF optional. <br />