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Dual Servo Turn & Trim

Discover the OTM-4350DS Duplex Head Turn & Trim—an industry-leading dual-servo machine for ammunition brass casing head turning and trimming in one pass. Achieve unmatched precision, 99% part-to-scrap separation, and fast caliber changeovers for high-volume ammo production. Contact Ammo Rx, your premier supplier of advanced ammunition manufacturing equipment, today!

Details

The OTM-4350DS Duplex Head Turn & Trim, engineered by On The Mark Ammunition Solutions and delivered by Ammo Rx—your premier supplier of cutting-edge ammunition manufacturing solutions—is a dual-servo, through-spindle system that performs simultaneous head turning and trimming in a single operation. Purpose-built for ammunition brass casings, this innovative machine dramatically reduces cycle times, minimizes variability, and boosts throughput while ensuring superior repeatability. Featuring an industry-first 99% part-to-scrap separation efficiency, IP65/Class 1 Division 2 electrical ratings, and intuitive CNC lathe-style controls (Z/X axes), the OTM-4350DS redefines post-draw brass processing for calibers from 300 AAC up to 20mm. As a game-changer in ammo brass processing, it sets new standards in servo-driven turn & trim technology.

  • Purpose: Simultaneous head turn and trim for brass casings in high-volume ammunition production
  • Key Benefit: Dual-servo precision with 99% part-to-scrap separation for efficient ammo manufacturing

Production Capacity: Up to 40 parts/min (338 Lapua), 25–30 parts/min (50 BMG), 20 parts/min (20mm) at 90% efficiency

Additional Information

Advanced Duplex Turn & Trim System
Servo-Driven Dual-Head Machining
The OTM-4350DS leverages advanced servo-controlled technology to synchronize head turning and trimming through a rigid through-spindle architecture, delivering consistent dimensions, superior surface finishes, and reduced tool wear in demanding ammo brass processing environments. Unlike traditional mechanical systems, this servo-driven turn & trim machine offers unparalleled precision and flexibility—save up to six preset programs to streamline caliber changeovers: simply swap tooling, select a program, and resume production. Ideal for high-volume ammunition production, it minimizes variability while maximizing output.

  • Process: Simultaneous head turning and trimming in one continuous motion for efficient brass casing machining
  • Outcome: Tight dimensional control, improved finish, and shorter cycle times in ammo finishing
  • Control: CNC lathe-style Z/X axes, six program presets, Allen Bradley PLC for reliable operation

Through-Spindle Efficiency + 99% Separation
Experience breakthrough efficiency with the OTM-4350DS’s integrated automation, providing near-perfect 99% part-to-scrap separation to minimize manual sorting and accelerate downstream workflows in ammunition manufacturing. The servo onload datum rod and custom OTM collet system with adjustable clamping force ensure stable, concentric workholding across a wide caliber range, protecting brass integrity and enhancing overall productivity.

  • Mechanism: Through-spindle feed, servo onload datum rod, custom collet with adjustable pressure for precision ammo processing
  • Benefit: Reduced handling, faster takt times, and cleaner workflows with near-zero sorting labor in high-volume production
  • Applications: Post-draw head profiling and length trimming for pistol, rifle, large-caliber, and 20mm casings

Robust, Production-Ready Design
Engineered for the rigors of ammunition production, the OTM-4350DS features Nickel & Zinc coated internals for superior corrosion resistance and wear protection, full guarding with 3/8″ polycarbonate windows, and magnetic door interlocks for operator safety. With anti-static systems, IP65 minimum and Class 1 Division 2 electrical ratings, this USA-made machine supports reliable, low-maintenance operation in challenging environments—making it the ultimate choice for servo-driven ammo equipment.

  • Components: Dual-servo heads, custom collet system, OTM-240A case feeder, anti-static systems for durable brass machining
  • Benefit: High uptime, reduced maintenance, and robust performance in ammo manufacturing settings
  • Environment: Protected surfaces, sealed electronics, and safe operator access for long-term reliability

Product Feeding
Every OTM-4350DS comes standard with the OTM-240A right-hand case feeder (OTM-300A for 50 cal), featuring bowl level sensors, a polycarbonate lid with dome lights, and quick-swap tooling for seamless caliber changeovers. This intuitive design minimizes downtime, requires minimal training, and enhances efficiency in high-volume ammunition brass processing—ensuring smooth transitions without compromising precision or quality.

  • Dual-Servo, Single-Pass Operation: Turn and trim simultaneously to compress cycle times in ammo production.
  • 99% Part-to-Scrap Separation: Near-perfect sorting reduces labor and accelerates flow in brass casing finishing.
  • Precision Workholding: Custom OTM collet with adjustable clamping force protects brass integrity during machining.
  • Fast Changeovers: Save up to six presets; quick tooling swaps with the OTM feed system maximize uptime.
  • Industrial-Grade Controls: Allen Bradley PLC, I/O Link architecture, 10″ color touchscreen with physical buttons for user-friendly operation.
  • Built for Production: Nickel & Zinc coatings, IP65 minimum, Class 1 Division 2, full guarding, magnetic interlocks for safe, reliable ammo equipment.
  • Made in the USA: Engineered and manufactured by On The Mark Ammunition Solutions for top-tier quality.
  • Feeder: OTM-240A Right-Hand Case Feeder (caliber specific; OTM-300A for 50 cal)
  • Control & Interface: Allen Bradley PLC, I/O Link architecture, 10″ color touchscreen, physical touch buttons
  • Axis Layout: CNC lathe-style Z and X axes for precision control
  • Programs: Up to six preset programs for quick setup
  • Workholding: Custom OTM collet system, adjustable clamping force
  • Automation: Servo onload datum rod
  • Electrical Ratings: IP65 minimum, Class 1 Division 2; anti-static systems
  • Safety: Magnetic door interlocks; complete guarding with 3/8″ polycarbonate windows
  • Utilities: 240/480V power, 100 PSI air
  • Footprint: 54″ x 40″
  • Work Area: 108″ x 96″
  • Weight: 1,650 lbs

Caliber

Production Rate

Average Efficiency

338 LAPUA

40/MINUTE

90%

50 BMG

25-30/MINUTE

90%

20MM

20/MINUTE

90%

 

Contact Us

Transform your production with Ammo Rx. Explore how we can elevate your manufacturing precision and efficiency. Request a quote with us today to revolutionize your processes.

About Ammo Rx & On The Mark

Ammo Rx and On The Mark Ammunition Solutions partner to deliver innovative ammunition manufacturing solutions. With decades of expertise, we provide tailored systems, from standalone presses to integrated production lines, ensuring precision and efficiency for manufacturers worldwide. Our commitment to quality and customization empowers your production to meet the highest industry standards.

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