Case Gauging
Discover the OTM-70CGM, a high-precision cartridge gauging machine for verifying dimensions like OAL, diameter, headspace, and primer depth. With automated inspection, quick caliber changes, and digital controls, ensure SAAMI-compliant ammunition. Contact Ammo Rx for advanced QC solutions!
Details
The OTM-70CGM, engineered by On The Mark Ammunition Solutions and delivered by Ammo Rx, is a precision quality control system designed to ensure finished cartridges properly chamber in firearms. This advanced gauging machine automatically verifies critical dimensions such as overall length (OAL), case diameter, shoulder position, and headspace using a machined chamber replica. If a cartridge fails to seat fully—indicating potential defects—the system detects the protrusion and ejects the round, while also inspecting for proper primer depth. Passing cartridges continue to collection, enhancing reliability and ensuring only in-spec ammunition reaches packaging.
With a 4-inch digital touchscreen for intuitive operation, modular tooling for quick caliber changes, and integrated lot tracking, the OTM-70CGM supports high-volume production with minimal downtime, achieving efficiency rates up to 95% in diverse ammunition lines.
- Purpose: Verifies cartridge dimensions and primer depth for chambering reliability
- Key Benefit: Automated QC with rejection of defects, reducing errors and waste
- Production Capacity: High-throughput inspection for scalable operations, compatible with various calibers
Additional Information
More Details
Advanced Gauging System
Precision Chamber Gauging Technology
The OTM-70CGM is a dedicated cartridge gauging center, optimized for inspecting a wide range of ammunition types. It automatically inserts each cartridge into a machined chamber bushing that replicates the firearm’s chamber. If the cartridge does not fully seat—due to issues with overall length, case diameter, shoulder position, or other dimensions—the system detects the protrusion and flags the defective round. Rejected cartridges are ejected, while passing ones slide to collection. This automated process ensures exceptional accuracy and repeatability, critical for SAAMI and MIL-SPEC compliance in commercial, military, and reloading applications.
- Technology: Machined chamber replication with protrusion detection for dimensional verification
- Outcome: Enhances ammunition reliability by eliminating out-of-spec rounds
- Applications: Pistol and rifle cartridges, including off-norm variants like tracers or subsonics
Digital Touchscreen Control System
Powered by a 4-inch digital touchscreen interface, the OTM-70CGM provides intuitive management of the entire inspection process. Operators can monitor cartridge feed to ejection in real-time, adjust settings like feed rates, gauging sensitivity, and ejection parameters, and track production with an integrated lot counter. This user-friendly system supports seamless batch management, minimizes operator intervention, and streamlines quality assurance in 24/7 environments.
- Features: Real-time monitoring, configurable settings, lot tracking for accurate production oversight
- Benefit: Reduces setup times and enhances efficiency with minimal training required · Reliability: Designed for ease of use, with proven durability in high-volume QC workflows
Modular Tooling And Caliber Flexibility
The OTM-70CGM features a modular bushing system for quick, tool-less caliber changes, allowing operators to switch between different chamber specifications with minimal downtime. This flexibility supports diverse ammunition lines, from 9mm Luger to .338 Lapua, ensuring precise gauging across calibers. Quick-release mechanisms and adjustments streamline changeovers, making it ideal for manufacturers handling multiple rounds while maintaining strict quality standards.
- System: Modular bushings and tool-less adjustments for rapid reconfiguration
- Benefit: Increases production efficiency and adaptability in versatile operations
- Applications: Supports small, medium, and large calibers for agile manufacturing
Automated Rejection And Collection
The OTM-70CGM’s automated rejection system ensures reliable handling of inspected cartridges. Defective rounds are ejected from the process, preventing them from advancing to packaging, while passing cartridges are directed along a slide for easy collection. This gentle, efficient mechanism supports continuous operation and integrates seamlessly with downstream processes, enabling unattended QC in high-volume environments.
- Mechanism: Protrusion detection with automated ejection and slide collection
- Outcome: Eliminates defects and supports scalable, automated quality control
- Applications: Ideal for high-volume ammunition manufacturing with compliance focus
Key Features
- Precision Inspection: Machined chamber bushing for verifying OAL, diameter, headspace, and primer depth.
- Digital Interface: 4-inch touchscreen for real-time monitoring, adjustments, and lot tracking.
- Modular Design: Tool-less caliber changeovers with quick-release bushings for flexibility.
- Automated Handling: Ejection of rejects and slide collection for passing rounds, ensuring efficiency.
- Operator Safety: Robust construction with safety interlocks and user-friendly controls.
General Specifications
- Production Rate: High-throughput, up to 240 PPM (parts per minute) depending on caliber, 95% efficiency
- Material Range: Compatible with pistol and rifle cartridges across SAAMI/MIL-SPEC standards
- Controls: 4-inch digital touchscreen with real-time monitoring and lot counter · Tooling: Modular bushing system for quick caliber changes
- Electrical Rating: IP65-rated for durability
- Safety Features: Safety interlocks, robust enclosure
- Power Requirements: Standard 110/220V, minimal air if pneumatic options included
- Footprint: Compact design, approximately 48″ x 36″ (work area variable)
- Weight: Approximately 500 lbs
- Additional Features: Tool-less adjustments, integrated lot management, seamless integration with production lines
Caliber Versatility Overview
Our specialty equipment adapts effortlessly to a broad spectrum of calibers with minimal reconfiguration, supporting small, medium, and large categories for versatile manufacturing:
|
Caliber |
Production Rate |
Average Efficiency |
|
300 AAC |
60/MINUTE |
90% |
|
5.56X45 |
55/MINUTE |
90% |
|
308 WIN |
50/MINUTE |
90% |
|
338 LAPUA |
45/MINUTE |
90% |
This extensive range enables agile responses to market demands in rifle and tactical ammunition, including off-norm variants like tracers or subsonics.
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.