Product Overview

The OEW2-25-2MHCP​ is ABB Robotics’ welding dress-pack assembly for the 25 kg payload robot class — primarily the IRB 2600 and IRB 4600-20/45 — built around the “OEW” (Orbital/Option Electrical Welding) package architecture that ABB uses for arc-welding cell dressing. The “25” in the descriptor pins the payload class (25 kg, matching IRB 2600-12/1.65, IRB 2600ID-8/2.0, IRB 4600-20/2.50), “2M” denotes the 2-metre dress/cable envelope that aligns with the robot’s reach and the upper-arm-to-wrist flex length, and “HCP” stands for Heavy Cable Protection​ — the black helically coiled polyethylene armor that wraps the bundled cables along the robot’s upper arm, elbow, and wrist, protecting against weld spatter, torch-clash abrasion, and the repetitive flexion fatigue that kills bare cables in 3-shift welding cells. The commercial order number E007310-050E​ identifies the bundled assembly in ABB’s order system, while the two 3HAC article numbers — 3HAC17484-001​ and 3HAC025724-001​ — are the constituent RobotStudio spare-part codes: 3HAC17484-001​ typically covers the upper-arm dress (axes 1–3 motor power, SMB — Serial Measurement Board — communication, and the upper dress anchor into the base/between-arm channel), and 3HAC025724-001​ covers the wrist-axis dress (axes 4–6 motor power, weld-power +/-, gas-solenoid airline, and the wrist-flex loom that lands on the torch-side DressPack exit). The exact split can vary across E007310-050E​ revisions (ABB has refreshed the bundle BOM mid-life), so the two 3HAC articles should be cross-checked against the robot’s spare-parts manual — but the composite OEW2-25-2MHCP​ delivered under E007310-050E​ is the drop-in dress assembly a cell supervisor orders when a 25 kg ABB welder’s dress pack has spattered through or developed an SMB comm fault from a fatigued wrist-cable.In an IRB 2600/4600 arc-welding cell, the OEW2-25-2MHCP​ is the “vascular system” of the robot arm — it carries six motor-power cores (one per axis, shielded, keyed robotic plugs at both base and wrist-break), the SMB ribbon (the serial chain that reads the resolver/SMB data for axes 1–6 back to the controller’s Drive Module), the weld-power conductors (+/- from the weld source — e.g., Fronius TPS 400i, Lincoln Power Wave — through the dress to the torch), the gas-solenoid airline (pneumatic, 6 bar, for torch air-blast / anti-spatter), and sometimes the wire-feed signal pair (if the wire feeder is robot-mounted, though more often the feeder is fixed and the wire is pushed through a liner — the dress may or may not carry feeder power depending on cell design). All of this is bundled inside the HCP helical armor, which is itself clipped to the robot’s dress-mount points (upper-arm channel, elbow slider, wrist bracket) with releasable spiral-clips so the dress can be unclipped, swapped, and re-clipped without tools beyond a 4 mm hex.The OEW2-25-2MHCP​ is not a user-configurable product — no DIPs, no firmware, no parameterization. The dress plugs into the robot’s base junction (Base Cable Interface — BCI) and into the wrist’s DressPack outlet; the controller auto-detects the SMB chain on next power-up, and the motor cables are polarised/keyed so mis-plugging is impossible. From a spare-parts logistics view, the OEW2-25-2MHCP​ (via E007310-050E) is the “whole-dress” SKU — plants can also order the 3HAC constituents separately if only the wrist dress (3HAC025724-001) is torn and the upper dress (3HAC17484-001) is still good, but the bundled OEW2-25-2MHCP​ is the common procurement path because both halves wear together in heavy-spatter cells and the price delta vs. two singles is small.

Technical Specifications

Main Features and Advantages

HCP helical armor against weld-cell abuse.​ The standout feature of the OEW2-25-2MHCP​ is the HCP (Heavy Cable Protection) outer wrap — a continuous black polyethylene helix that spirals over the bundled cables along the entire 2 m dress length. In a manual/robot arc-welding cell (MIG/MAG, TIG, or pulsed MIG on exhaust manifolds, seat frames, BIW brackets), spatter is constant — 50–200 µm globules landing on the arm several times per minute in heavy-root-pass cells. Bare cable jackets (PUR or TPE) harden after 6–9 months of thermal cycling and then crack; once cracked, a spatter bead melts through to the conductor, shorts motor-phase to PE, and the robot logs “axis X overcurrent” or “SMB comm lost.” The HCP armor on the OEW2-25-2MHCP​ takes the spatter hit — the bead sticks to the PE helix, cools, and either flakes off or stays inert; the cables underneath stay pristine for 12–18 months in 3-shift cells, 24–36 months in single-shift. The helix also resists torch-clash abrasion — if the torch grazes a fixture or a part-out position, the dress along the wrist takes the rub; the HCP wears shiny before it breaches.Pre-terminated ABB keyed robotic plugs — zero re-wiring.​ Every cable in the OEW2-25-2MHCP​ lands in ABB’s standard robotic plug (round, threaded locking collar, keyed pin-index so a motor plug cannot be forced into an SMB socket). The base end plugs into the robot’s Base Cable Interface (BCI) in the pedestal; the wrist end plugs into the DressPack outlet at the axis-6 flange. This means a dress swap is purely mechanical: unplug 6+ connectors at base, unclip HCP spirals at 3–4 dress-mount points, pull the old dress out of the arm channels, snake the new OEW2-25-2MHCP​ in, clip HCP, plug base + wrist, torque the collar set-screws — 45–60 minutes for a skilled cell-tech, no soldering, no crimping, no multimeter verification of pinout. The SMB ribbon inside the 3HAC17484-001​ upper dress is pre-terminated at both ends (BCI side and the SMB daisy-chain tap that feeds the wrist SMB), so the controller sees “SMB OK” on next power-up without any teach-pendant configuration. This plug-and-play is what makes the OEW2-25-2MHCP​ a high-turnover spare SKU — a cell can be back welding inside 90 minutes of a dress failure, versus 4–6 hours if the plant tried to re-terminate a custom dress.Bundled motor + SMB + weld + gas in one dress.​ A recurring pain in welding-cell maintenance is “dress sprawl” — motor cables from one supplier, SMB from another, weld power as loose 70 mm² flex, gas line ty-wrapped alongside, all competing for the same dress-mount clips and all wearing at different rates. The OEW2-25-2MHCP​ bundles them into one HCP-wrapped loom so the cell has one dress-pack SKU, one set of clips, one failure mode. The motor cores are individually shielded (EMC to the Drive Module), the SMB ribbon runs parallel but isolated (serial 9.6 Mbps-ish, not sensitive to the motor-PWM EMI because it’s differential and the dress has separation), the weld-power pair is fat (35–50 mm² depending on weld-source current — 350 A cells need 50 mm², 200 A cells can run 35 mm²; the E007310-050E​ BOM is spec’d to the 350 A class for the 25 kg robot, confirm at procurement if the cell runs lower amperage and wants a lighter dress). The gas line is 6 mm pneumatic (PU, 6 bar rated, quick-disconnect at the torch-side, push-in at the source side). Having all four in one HCP means the wrist flex zone (axis 4–6 cluster) has one loom instead of three — less snag risk at the elbow slider.2 m dress length matched to IRB 2600/4600 25 kg reach.​ The “2M” in OEW2-25-2MHCP​ is not arbitrary — it’s the dress-loop length from the base BCI, up the upper arm, through the elbow slider (which extends/retracts ~200 mm as axes 2–3 articulate), and down the wrist to the DressPack exit at axis 6. An IRB 2600-12/1.65 has a 1.65 m reach; the dress needs ~2 m to accommodate the elbow-slider travel plus the wrist-flex margin so the cables don’t go taut at axis-2 full-extend or axis-3 full-up. An IRB 4600-20/2.50 has 2.50 m reach, and the same OEW2-25-2MHCP​ 2 m dress works because the 4600’s arm channels are longer but the elbow-slider travel is proportionally larger — ABB’s dress BOM accounts for this; the E007310-050E​ is validated across both 25 kg-class robots. Using a shorter dress (e.g., a 1.5 m dress from a 12 kg robot) on a 2600 would cause the wrist cables to go taut at axis-2 full-extend and tear the SMB ribbon — the “2M” is the spec to respect.3HAC article traceability in RobotStudio.​ The OEW2-25-2MHCP​ procured under E007310-050E​ decomposes to 3HAC17484-001​ (upper) and 3HAC025724-001​ (wrist) in ABB’s RobotStudio spare-parts catalog. This matters for plants that track spares by 3HAC (ABB Robotics’ standard article prefix — 3HAC = Robotics, 3HAB = DCS/Advant, 3HAD = drives, 3HAA = ABB Ability). When the cell supervisor logs a “SMB not found axis 4–6” fault (classic wrist-dress SMB ribbon fatigue), they order 3HAC025724-001​ only — no need to buy the whole OEW2-25-2MHCP. When the upper dress has a motor-phase short from a spatter breach, they order 3HAC17484-001. When both are spent (typical in 18-month dress life), they order the bundled OEW2-25-2MHCP​ / E007310-050E​ and get both 3HACs in one box. This split-bundle logic is why the OEW2-25-2MHCP​ appears in both “whole-dress” and “half-dress” procurement paths depending on the plant’s wear pattern.