The RLB OBS 40 Heavy-Duty Cable Stripping Machine processes waste rubber-insulated and sheathed cables from Ø1 mm to 40 mm, delivering clean copper or aluminum conductors with residual insulation typically below 1 % and metal purity routinely exceeding 99 %.
In the wire and cable recycling sector, mechanical stripping remains the most effective route to convert low-value insulated scrap into premium bare bright metal. The OBS 40 is a compact yet robust dual-blade stripper engineered specifically for rubber power cables, multi-core sheath cables, household and industrial wiring, and production waste from drawing, stranding and bunching lines. Operators simply feed the cable according to diameter; precision upper and lower blade sets slit the outer jacket and insulation while the metal core is ejected cleanly through the central guide roller. The process is entirely mechanical—no chemicals, no burning—preserving conductor integrity and supporting compliance with modern recycling regulations.
Core Engineering Advantages
The OBS 40 uses premium 65Mn wear-resistant spring-steel blades that maintain sharp, consistent cuts on tough rubber, PVC and PE sheaths even under continuous high-volume duty, delivering service life measured in months rather than weeks for typical scrap-yard loads. Real-time blade-gap adjustment via the top handle allows operators to fine-tune clearance across the full Ø1–40 mm range without stopping production, eliminating the downtime associated with fixed-blade or multi-hole designs.
Compact footprint (typical working dimensions approximately 520–550 × 330–350 × 530–550 mm) and weight of 80–90 kg make the machine ideal for workshops with limited floor space or for placement beside existing wire-drawing, stranding or bunching equipment. Minimal moving parts, robust welded construction and one-operator operation reduce maintenance costs and operator fatigue while enabling a single person to manage multiple units. Independent industry data show that clean, bright copper recovered by mechanical stripping regularly commands a 20–30 % (and frequently higher) price premium over the same material sold as insulated scrap under ISRI “Druid” grading, because the output meets or approaches ISRI “Barley” (bare bright) specifications.
Detailed Technical Parameters
| Parameter | Specification |
|---|
| Model | OBS 40 |
| Processing diameter range | Ø1 mm – 40 mm |
| Motor power | 1.5 kW (single-phase or three-phase options) |
| Linear stripping speed | Approximately 20 m/h |
| Blade configuration | Dual upper and lower adjustable blade sets |
| Blade material | 65Mn high-wear-resistant spring steel |
| Compatible sheath materials | Rubber, PVC, PE and common cable insulation |
| Operation | Manual feed, automatic stripping & conductor ejection |
| Typical dimensions | 520–550 × 330–350 × 530–550 mm (working) |
| Approximate weight | 80–90 kg |
| Certifications | CE, ISO |
| Optional | Blade customization, layout integration support |
Structure and Materials
The machine frame is fabricated from heavy-gauge steel for long-term rigidity under continuous vibration and load. The dual blade shafts are precision-machined and mounted on robust bearings; the upper shaft is linked to a simple top-mounted handle that provides real-time gap adjustment across the entire diameter range. A central guide roller ensures the stripped conductor exits straight and free of residual sheath. All contact surfaces that handle the metal core are designed to minimize scratching, preserving the bright surface that scrap buyers value. Wear components are limited to the 65Mn blades, which can be resharpened or replaced quickly with OEM or customized profiles for special insulation types.
Main Application Scenarios and Selection Guidance
Primary applications include recycling plants processing mixed rubber-insulated power cables, scrap yards handling household and industrial waste cable, and cable manufacturers recovering production scrap from drawing, stranding and bunching lines. The machine also handles nozzle material, plastic heads and other short by-product lengths that are uneconomical to process by hand.
| Scenario | Recommended Solution | Daily Throughput Guide | Key Advantage | Risk / Limitation |
|---|
| Mixed Ø1–40 mm rubber & PVC scrap | OBS 40 | Hundreds of kg | Full diameter coverage, simple setup | Not ideal for heavy steel armour |
| High-volume thick power cable | OBS 40 or OBS 120 upgrade | Higher | Clean bare-bright output, fast ROI | Requires consistent diameter sorting |
| Fine wire or heavily mixed material | OBS 40 + downstream granulator | Variable | Maximize overall recovery rate | Stripping alone is less efficient on <3 mm multi-core |
| Space-constrained workshop | OBS 40 | Medium | Compact footprint, one-operator | Throughput limited by manual feed |
Failure-risk notes: Over-aggressive blade setting can nick conductors and reduce grade; under-setting leaves residual insulation that downgrades the metal. Heavily armoured or severely deformed cables should be pre-processed. Proper diameter sorting before feeding maximizes both purity and throughput.
Certifications and Applicable Standards
The OBS 40 carries CE and ISO machinery safety and quality certifications. Recovered copper and aluminium can be classified according to GB/T 13587 (copper and copper-alloy scrap) and related recycled-metal standards. The clean mechanical process supports compliance with environmental requirements governing noise, dust and waste handling, and the resulting bright metal aligns with ISRI/ReMA bare-bright (Barley) grading preferred by smelters and refiners.
Installation and Operating Precautions
Install on a level, stable surface with adequate clearance for in-feed and out-feed. Confirm power supply matches the 1.5 kW motor rating. Before production, set blade gap for the smallest diameter to be processed and perform a short test run. Always wear safety gloves and eye protection; never place hands near rotating blades. Keep the emergency stop accessible. Inspect blades daily for wear and clear residual insulation from the guide roller and discharge path. Store the machine in a dry environment and protect blades when idle for extended periods. Do not process cables containing significant steel armour or extremely hard composite jackets without pre-treatment.
Frequently Asked Technical Questions What cable diameters and insulation types can the OBS 40 process effectively?
The machine handles Ø1–40 mm rubber-insulated power cables, sheath cables, multi-core wires, household, industrial and communication cables with rubber, PVC or PE jackets, delivering clean copper or aluminium conductors.
How does metal purity and resale value compare with manual stripping or selling insulated scrap?
Mechanical stripping routinely achieves ≥99 % purity with minimal residual insulation, allowing the output to meet or approach ISRI bare-bright (Barley) specifications and command a typical 20–30 % (often higher) price premium over the same material sold as insulated scrap.
How easy is blade adjustment and what is expected blade life?
A single top-mounted handle provides real-time gap adjustment across the full diameter range without stopping the machine. 65Mn blades maintain performance for extended periods under normal rubber/PVC duty; resharpening or OEM replacement is straightforward.
How many operators are required and what throughput can be expected?
One operator is normally sufficient. Linear speed is approximately 20 m/h; actual daily tonnage depends on cable diameter mix, length consistency and continuous feeding, but is substantially higher than pure manual stripping while producing higher-grade metal.
When should a stripping machine be preferred over a granulator?
For larger-diameter cables where preserving whole-conductor length and achieving maximum purity for direct resale is the priority, the OBS 40 is the more economical and higher-value solution. Fine or heavily mixed material may benefit from a combined stripping-plus-granulation approach.
Does RLB support customization and long-term partnership?
Yes. We provide blade profile customization, layout integration advice, operator training and long-term spare-parts supply to ensure reliable performance and continuous technical support.
Inquiry Now
As a long-established supplier of complete wire and cable machinery solutions, RLB is committed to reliable quality, customized technical service and long-term cooperation. Tell us your typical cable diameters, daily volume, insulation types and available floor space, and we will prepare a detailed technical proposal, blade customization options and layout recommendations tailored to your recycling or production-waste recovery needs. Contact us today for pricing, lead times and after-sales support that protect your investment and maximize metal recovery returns.
Wire Stripping Machines - Reliable Doing Cable
RLB OBS 40 processes Ø1–40 mm rubber/PVC/PE cables with dual 65Mn blades, 1.5 kW motor, ≥99 % pure copper recovery. CE/ISO certified. Custom blades & long-term support. Inquiry Now for technical proposal.
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RLB OBS 40 Wire Stripping Machine
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