Sun Firm / Sun Firm Machinery Heavy Duty CNC Lathes and Turning Centers
Technical specifications, machine models, and engineering selection of Taiwanese heavy-duty flat bed CNC lathes, slant bed turning centers, and vertical lathes by Sun Firm Machinery.
Sun Firm CHT Heavy Duty CNC Lathes
Sun Firm CHT heavy-duty flat bed CNC lathes feature an 850 mm rigid Meehanite bed for turning components up to 1620 mm in diameter. The main spindle with 153 to 532 mm bore is powered by a 30 kW continuous motor. Machines integrate rugged multi-station turrets for heavy shaft turning.
- Swing over bed capacity from 1420 mm to 1620 mm
- Distance between centers from 1500 mm to 8000 mm
- Big spindle bore options from 153 mm to 532 mm
- Compatible with FANUC, SIEMENS, and FAGOR CNC units
CMT and CLT Super Heavy CNC Lathes
Sun Firm CMT and CLT super heavy-duty CNC lathes handle massive workpieces with swing over bed exceeding 2000 mm. Multiple hardened box guideways withstand severe cutting forces during roll machining. Sturdy steady rests and hydraulic tailstocks ensure vibration-free turning of long shafts.
- Swing over bed up to 2000 mm and 30 ton load rating
- Multiple box guideway bed structure for vibration damping
- Heavy hydraulic and self-centering steady rest supports
- Heavy-duty tailstock featuring built-in MT6 rotary quill
SBT Slant Bed and SVT Vertical CNC Lathes
Sun Firm SBT slant bed and SVT vertical CNC turning centers provide high rigidity for continuous production of flanges and discs. The true slant bed geometry ensures unimpeded chip evacuation during heavy metal removal. High-speed servo turrets deliver quick indexing and minimal cycle times.
- Slant bed design for rigid support and rapid chip removal
- Vertical SVT models for heavy flanges and wheel hubs
- High-torque hydraulic and servo driven indexing turrets
- Preloaded precision ballscrews on linear X and Z axes
MH and SET Precision Engine Lathes
Sun Firm MH, SET, and SFT conventional precision engine lathes deliver toolroom accuracy for maintenance and repair workshops. Induction-hardened and ground bedways maintain geometric tolerances across years of operation. Geared headstocks provide substantial low-end torque for diverse threading.
- High speed MH models for precision toolroom turning
- Heavy conventional SET and SFT models for maintenance shops
- Induction hardened and ground bed guideway ways
- Full threading gearbox for metric, inch, and diametral pitches
Structural Rigidity and Heavy-Duty Bed Architecture of Sun Firm Lathes
Taiwanese machine tool builder Sun Firm / Sun Firm Machinery specializes in heavy-duty and super-heavy CNC lathes engineered for demanding energy, oilfield, and steel mill applications.
The structural backbone consists of a monolithic Meehanite cast iron bed featuring wide induction-hardened and precision-ground box guideways.
Bed widths spanning 400 mm to over 1300 mm deliver substantial torsional resistance and vibration damping during interrupted cuts on heavy forgings.
Carriage slideways bonded with Turcite-B low-friction fluoropolymer prevent stick-slip motion, maintaining sub-micron positioning repeatability across decades of severe industrial service.
Geared Headstock Powertrain and Large Spindle Bore Engineering
The headstock assembly on Sun Firm CHT, CPT, and CLT flat bed CNC lathes integrates an automated multi-step gearbox delivering massive low-end torque for aggressive metal removal rates. High-grade double-row cylindrical roller bearings and angular contact thrust bearings rigidify the main spindle.
To accommodate oil country tubular goods (OCTG) and extended drive shafts, Sun Firm provides Big Bore hollow spindle options ranging from 153 mm to 532 mm in through-hole diameter.
Dual chuck systems mounted on both front and rear spindle faces provide synchronized clamping for extended tubular stock without deflection.
Slant Bed and Vertical Turning Configurations for High-Volume Machining
For high-throughput turning of discs, rings, flanges, and housings, Sun Firm Machinery manufactures SBT slant bed CNC turning centers and SVT vertical lathes. The rigid true-slant bed profile facilitates unobstructed chip flow directly into the chip conveyor while optimizing ergonomic loading.
Heavy-duty 8, 10, or 12-station servo turrets locked with precision Curvic couplings ensure rigid tool clamping and rapid bi-directional index times. SVT vertical turning machines eliminate workpiece overhang deflections, making them ideal for heavy asymmetric components and railway wheelsets.
Manufacturing Quality Accolades and CNC Controller Integration
With over 60 years of machine tool manufacturing heritage, Sun Firm Machinery has earned national honors including the Taiwan Excellence Award, National Brand Yushan Award, and Taiwan Branding Award.
Every lathe undergoes rigorous laser interferometer calibration and dynamic cutting tests prior to shipment.
Sun Firm lathes are integrated with industrial CNC systems from global automation leaders: FANUC (0i-TF Plus series), SIEMENS (SINUMERIK 828D / 840D sl), and FAGOR (8055i / 8065).
Comprehensive thread cutting cycles, thermal compensation macros, and constant surface speed controls optimize machining cycles.
Sun Firm / Sun Firm Machinery and model names are trademarks of their respective owners and are used only to identify the equipment for which we source parts. SpareX is not an official dealer, distributor or representative of Sun Firm / Sun Firm Machinery and is not affiliated with the trademark owner. Origin, documents and warranty are stated for each item in the quotation.
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