IRM Model 4080 4" x 8" 2-High Laboratory Rolling Mill

Description

IRM Model #4080 2-High Laboratory Rolling Mill

The IRM Model #4080 2-High Laboratory Rolling Mill is a robust, industrial-grade rolling mill engineered for laboratory, R&D, pilot-scale, and specialty rolling applications. Designed and built by International Rolling Mills (IRM), this machine bridges the gap between bench-scale lab mills and production equipment, delivering the stiffness, torque, and separating-force capacity needed for heavier reductions, wider strip, and higher-strength alloys—while retaining the precision and process control researchers depend on for repeatable metallurgical work.

With 4.0″ diameter work rolls, an 8.0″ roll face, and approximately 50,000 lbs of separating force, the #4080 offers far greater roll-bite capacity and load capability than light-duty bench mills, making it well suited for processing thicker incoming stock, running aggressive pass schedules, and supporting pilot and pre-production trials where lab results need to scale toward manufacturing.

The mill is powered by a new 7.5 HP inverter-duty AC drive with a new variable-speed AC inverter supplied as standard, providing smooth, high-torque operation across the full speed range. This drive configuration enables precise speed control and stable low-RPM rolling, which is critical when processing thicker stock, higher-strength alloys, or running experimental pass schedules. Mill voltage is configured to customer choice (3-phase).

The IRM #4080 is equipped with D2 tool steel work rolls hardened to approximately 60–62 Rockwell C with a satin finish. D2's high carbon and chromium content provides excellent wear resistance and dimensional stability, helping maintain roll geometry, surface finish, and consistent reductions over repeated rolling passes. This contributes to improved repeatability, longer roll life, and reliable performance when processing more demanding materials. Roll gap is adjustable both simultaneously and independently, giving the operator fast centerline height changes as well as fine control over parallelism and wedge.

A rigid industrial frame, precision roll alignment, and robust bearing arrangement allow the mill to maintain roll geometry under the high loads generated by the larger rolls, supporting consistent reductions, improved surface quality, and dependable results across multiple trials. Entry and exit tables are installed to support material handling through the roll bite, and all nip points are guarded for safe operation.

Key Features
2-High rolling mill configuration for laboratory, R&D, and pilot-scale use
4.0″ diameter × 8.0″ face work rolls with ~50,000 lbs separating force
D2 tool steel rolls, ~60–62 HRC, satin finish
7.5 HP inverter-duty AC drive with new variable-speed AC inverter
Roll gap adjustable simultaneously or independently for precise thickness and parallelism control
High-torque, low-speed capability for controlled rolling of demanding materials
Rigid industrial frame designed for stability under high separating loads
Entry and exit tables installed for material handling
Guarded nip points for safe operation
Customer-choice voltage, 3-phase

Available Optional Features & Upgrades
Heated Roll Package – Electrically heated rolls with closed-loop temperature control for warm and hot rolling applications
Load Cells – Integrated separating force measurement for real-time process monitoring and validation
Digital Height Indicators – High-resolution digital roll gap readout for improved setup repeatability
Mobile Package – Heavy-duty base with casters for easy repositioning within the lab or shop
Data Acquisition System – Optional logging of force, position, and process parameters for analysis and reporting

Built for Research-Grade Rolling
The IRM #4080 is designed for engineers, metallurgists, and researchers who require controlled rolling conditions, meaningful torque and force capacity, and optional instrumentation—not just material forming, but repeatable, data-driven process development at a scale that translates to production. Its modular configuration allows the mill to operate as a straightforward rolling platform or expand into a fully instrumented research system as application needs evolve.

Images shown are representative of the machine. The actual mill may differ in appearance based on configuration, options, and final build.