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Coil Processing Line Rebuilds & Upgrades
Increase Efficiency of Existing Lines
Our team of engineers has extensive experience in coil processing equipment re-tool and rebuild services, with special expertise in slitters, side trimmers and scrap choppers. We offer complete line rebuild, refurbishment and upgrade solutions to suit our customers' needs.
Our Capabilities
When required, we can supply custom-engineered solutions and upgrades for various makes and models of coil processing equipment and for many applications. Our basic rebuild scope of work includes:
- On-site baseline inspection
- Complete equipment inspection and reports before teardown, including endplay checks, breakaway torques, run-out checks, etc. – all reports are provided to the customer for their records
- “Pre-Rebuild” inspection reports according to print specifications, including arbor measurements and run-outs, housing bore measurements and bore alignments.
- Final inspection reports and run-in data provided to customers
- Multiple upgrade options, including new drives (retrofit into existing heads), new fixed or setup bases, high-precision bearings and improved arbor precision
- Slitter arbor upgrades to accept hydraulic hub cutters, knife holders or specialized tooling
- In-house inspection of precision bearings and grinding of bearing spacers for proper preload or endplay (we have experience setting up bearings up to 40” diameter)
Rebuilt and Upgraded
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Hot Mill Trimmers/Choppers
We have rebuilt many hot mill trimmers/choppers for several different companies. The rebuild procedure consists of the following:
- Full inspection (as received) to check trimmer arbor run-outs, bearing and sleeve endplay checks, and breakaway torques on chopper setup
- Complete teardown, including disassembly down to bare arbors and housing
- Set up arbors and housing on a machine and fully inspect diameters and bore alignments according to print specification
- Clean all reusable parts and paint where applicable
- Reassemble arbors and put back into housing
- Set up chopper knives for proper clearances and heights
- Final inspection of endplays, arbor run-outs, and breakaway torques
- Continuous test run to seat in bearings and assure proper running ability when put back into the line
- All inspection and run-in data are given to the customer for their records
Scrap Choppers Rebuilds and Upgrades
We have extensive experience rebuilding all types of scrap choppers. When required, we can offer engineered solutions to upgrade or retrofit existing machines. Our basic rebuild scope of work includes the following:
- On-site baseline inspection
- Complete equipment inspection and reports before teardown, including endplay checks, breakaway torques, knife heights and gaps, and arbor lift (all reports are provided to the customer for their records)
- “Pre-Rebuild” inspection reports according to print specifications, including arbor measurements and run-outs, housing bore measurements, and bore alignments
- Refurbish and repair work per customer’s instructions
- In-house inspection of precision bearing and grinding of bearing spacers for proper preload or endplay to obtain knife gaps required for high-quality trimming and chopping (Machine Concepts has experience setting up bearings up to 40” in diameter)
- Reassembly with new bearings and seals
- Chopper setup with proper knife height and gap. Anti-backlash gearing spacers are measured and ground to control chopper knife gap during operation.
- Lengthy test runs on chopper heads before shipment
- Final inspection reports and run-in data are provided to the customer
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Side Trimmer Rebuilds and Upgrades
At Machine Concepts, we can rebuild all brands and models of side trimmers, including trimmers that fall into the following categories:
- High-speed precision trimmers running from 1000 to 6000 fpm – cutting .003 to .040 aluminum or steel
- Medium to heavy gauge trimmers cutting .040 to .375 aluminum or steel
- Pickle line trimmers with a wide range of speeds, materials, and gauges (We have rebuilt many Wean-style PL side trimmers for various companies.)
- Hot mill trimmers with a gauge range of .080 to .400
Rebuild/Retrofit Options for Side Trimmers
- Add horizontal knife adjustment – motorized or manual
- Add vertical trimmer knife adjustment – motorized or manual
- Add digital displays for horizontal and/or vertical knife adjustment
- Add knife width gauge with digital display for simple operation
- Arbor replacement or modification to establish fixed knife cutting edges, reduce setup time, and create setup consistency
- Scrap handling and scrap chute modifications
- Custom electrical upgrades, drive upgrades, and automation
- Bearing replacement or modification to improve accuracy, reduce running temperatures, extend running life, and reduce maintenance requirements
Slitter Rebuilds
At Machine Concepts, we can rebuild many different brands and models of slitters. We specialize in high-precision slitters that run at very high speeds and slit the thinnest of material, and we also rebuild heavy-gauge slitters of all types. A typical rebuild investment is $25K to $40K and consists of the following:
- Full, as received, inspection checking Slitter arbor run-outs, bearing and sleeve endplay checks, arbor parallelism throughout cutting range, and arbor drop, which will show any excessive clearances inside the housing
- Complete teardown: disassembling down to bare arbors and housing
- Set up arbors and housing on a machine and fully inspect diameters and bore alignments according to print specification
- Clean all reusable parts and paint where applicable
- Reassemble arbors and sleeves with new bearings and put back into housing
- Final inspection of endplays, arbor run-outs, and arbor parallelism
- Test run for a continuous run to seat in bearings and ensure proper running ability when put back into the line
- All inspection and run-in data to be given to customer for their records
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Leveler Rebuilds
We offer complete leveler rebuild services to restore performance, extend equipment life and integrate modern technology into your existing line. We rebuild entire leveler systems, including standard and tension leveler cassettes, with the same attention to detail and precision engineering that goes into our new builds. Whether your equipment needs updated components, re-machining or enhanced control capabilities, we can upgrade it to meet today’s production standards — improving reliability, accuracy and uptime.
Scissor Lifts
With scissor lifts, we can rebuild your equipment or reverse engineer existing systems offering suggestions or options that would improve reliability, capacity or safety. We can also provide improved hydraulic and/or control systems. We rebuild scissor lifts for many applications.
Why Machine Concepts?
With Machine Concepts, you gain a talented and diverse team to deliver an innovative solution that eliminates downtime, increases run speeds and advances production lines to meet new product demands. From conceptual design to responsive after-sales support, you can count on Machine Concepts to pioneer the best mechanical or automated solution to achieve your business goals.
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