Advance Precision Technology (aptindia) restores crashed, worn, or noisy CNC machine ball screws to OEM tolerances at our Bhosari, Pune metrology facility. Save 65%–75% of replacement costs and eliminate 12–16 week overseas import delays.
Everything engineering, maintenance, and purchase heads need to know before dispatching an assembly.
Precision ground & rolled ball screws, preloaded single/double ball nuts, end journals, wiper seals, and internal recirculation circuits across all international brands: Hiwin, THK, NSK, PMI, Rexroth/Star, Kuroda, Steinmeyer, and more.
Our dedicated metrology facility is in Bhosari Industrial Estate, Pune, Maharashtra (aptindia). Strategically positioned adjacent to the Pimpri-Chinchwad, Chakan, Talwade, and Talegaon manufacturing corridors with nationwide cargo connectivity.
View Google Map & Works Address →Ball screws and axis drives from Vertical & Horizontal Machining Centers (VMCs/HMCs), CNC Lathes, Turning Centers, Cylindrical & Surface Grinding machines, Wire EDM, Laser Cutting beds, and heavy industrial automation linear stages.
Shafts are checked on grade-00 granite surface benches using dial micrometers to measure Total Indicator Reading (TIR) runout (≤ 0.005 mm / 5 µm). Bent shafts are hydraulically trued, ball tracks micro-lapped, and nuts repacked with precision-matched balls.
Standard Turnaround: 2 to 5 business days for comprehensive strip-down, truing, and re-balling.
Emergency Breakdown Slot: Priority 24 to 48 hours expedited service for critical plant line-stops.
1. Wipe clean & apply rust-preventive grease.
2. Wrap nut and journals with heavy bubble wrap.
3. Tape securely along a rigid wooden batten or PVC pipe to prevent transit bending.
4. Ship via transport/cargo or drop off directly at our Bhosari works.
Select your ball screw dimensions and observed symptoms for an instant repair turnaround estimate and protocol recommendation.
Direct connection to Mayur Sable (Technical Desk, Bhosari Works)
Our workshop in Bhosari, Pune is equipped with metrology tools to solve complex mechanical degradation.
Over time, cyclic friction wears recirculating steel balls, causing positioning drift. We ultrasonic wash the assembly, sort precision balls to 0.001mm, and rebuild the nut with dialed preload.
Zero-Backlash GuaranteedCNC crashes frequently introduce 0.5mm to 3mm runout into long screws. Using hydraulic truing benches and dial indicators, we re-align shafts back within 0.005mm straightness.
Shaft Truing ProtocolContamination or coolant starvation creates spalling and rough track grooves. We micro-lap the internal helical profiles to restore a mirror surface finish without compromising lead pitch.
Track Micro-LappingSpun support bearings ruin bearing journals and locknut threads. We rebuild journals with hard chrome plating or precision sleeve grinds to restore original bearing press fits.
Journal RestorationEvery ball screw reconditioned by Advance Precision Technology is dispatched with an official inspection report.
Tribak Phuge Industrial Premises, Bhosari, Pune • ISO 9001:2015
| Inspection Parameter | OEM Allowed Tolerance | APT Measured Result | Status |
|---|---|---|---|
| Radial Runout (Drive End Journal) | ≤ 0.008 mm | 0.003 mm | PASSED |
| Radial Runout (Center Threaded Span) | ≤ 0.012 mm | 0.004 mm | PASSED |
| Radial Runout (Support End Journal) | ≤ 0.008 mm | 0.003 mm | PASSED |
| Axial Backlash (Nut Assembly) | ≤ 0.005 mm | 0.000 mm (Zero Play) | PASSED |
| Preload Dynamic Drag Torque | 0.3 – 0.6 Nm | 0.42 Nm Constant | PASSED |
Straight answers regarding timelines, warranties, and transport protocols.
A: Clean and coat the ball screw in grease or rust-preventive oil, wrap it securely in bubble pack, and brace it along a rigid wooden batten or PVC pipe to prevent bending in transit. We handle logistics via road, cargo, or express air.
A: Yes. We regularly recondition ball screws from all international manufacturers (Hiwin, THK, NSK, Star/Rexroth, PMI, Kuroda, Steinmeyer) adhering to identical thread profiles and precision standards.
A: All repairs are backed by our functional precision warranty covering preload and runout, supported by a formal written inspection certificate issued prior to dispatch.
If your ball screw is cracked beyond repair or you require companion support units (FK/FF), flexible couplings, or LM guideways, explore our catalog of 59 ready-to-ship products from Hiwin, THK, PMI, and SKF.
