Roll-Guided Welding Wire Conduit
Rolliner is a welding wire conduit that carries your wire on rollers instead of dragging it through a plastic liner, so your run from drum to robot can take more than twice the bends before the feeder runs out of pull.
Made in Germany by MIGAL.CO GmbH · US distribution by Inmotion, Jacksonville FL
Conventional PTFE and plastic liners work on short, straight runs. Route them through an energy chain, add bends on the way to the robot, or feed aluminum wire, and the force on your feeder climbs until it can't keep up.
Friction spikes at every bend. The more the arm moves, the worse it gets.
Every bend multiplies the pull your feeder needs. A long route from a central drum adds bends fast.
Soft wire shaves against liner walls. Debris accumulates. The jam you notice is the one that built up over weeks.
Two or three shifts per day means wire feed failures compound. Every 15-minute repair cycle has a dollar value.
Individual roller pairs rotated 90° to each other. The wire always contacts a roller, never a liner wall. Per MIGAL.CO testing.
Run up to 25 m per conduit and extend with hose connectors. For longer routes or very soft wire, add a RoboFeed feed assist.
Patented conical guide threads wire through tight bends without the resistance buildup that collapses push force in a liner.
Rolling contact doesn't abrade wire surfaces. Aluminum wire runs without shaving, debris accumulation, or bird-nesting.
The roller elements don't wear the way liner material does. No replacement cycle, no lubricant schedule.
Snap elements together to length. Extend later if the cell layout changes. Shorten with a separation tool.
Supports TIP-TIG and high-deposition processes at up to 30 m/min.
Shields the roller elements from weld spatter, grinding dust, and coolant. Run without it in clean cells to save weight.
Trace your wire path from drum to feeder and add up every bend. That total, more than the length, decides whether your feeder keeps up.
| Total bend | Sliding liner | Rolliner |
|---|---|---|
| 360° | 3.5 N | 1.7 N |
| 720° | 12.3 N | 2.7 N |
| 1,080° | 43.4 N | 4.5 N |
| 1,440° | 152 N | 7.5 N |
A feeder pulling 30 N hits its limit at about 970° with a sliding liner and about 2,400° with Rolliner. For safe continuous running, plan on about 500° and 1,200°.
Calculated by MIGAL.CO with the Euler-Eytelwein formula, for 1.0 N extraction force from the drum and friction of 0.20 (sliding) and 0.08 (rolling). Your numbers depend on your drum, wire and routing.
| Dimension | Rolliner 3G | Conventional liner |
|---|---|---|
| Friction coefficient | 0.08 | 0.20 (MIGAL.CO figure for sliding liners) |
| Wire transport principle | Rolling: precision roller pairs, wire rides on rollers | Sliding: wire drags against liner wall |
| Maintenance | Maintenance-free for several years | Regular liner replacement as it wears |
| Aluminum wire handling | Clean transport, no surface abrasion | Shaving, bird-nesting, compression issues |
| Energy chain performance | Designed for it: 70 mm radius, consistent rolling contact through dynamic paths | Degrades with repeated flexing and multiple bends |
| Maximum reliable length | Up to 25 m per conduit, extendable | Best on short, straight runs |
| Assembly | Tool-free, snap-together elements | Cut-to-length, crimped fittings |
| Wire debris build-up | None: rollers don't abrade wire | Accumulates shavings that cause progressive jams |
Friction coefficient
Rolliner 3G
0.08
Conventional liner
0.20 (MIGAL.CO figure for sliding liners)
Wire transport principle
Rolliner 3G
Rolling: precision roller pairs, wire rides on rollers
Conventional liner
Sliding: wire drags against liner wall
Maintenance
Rolliner 3G
Maintenance-free for several years
Conventional liner
Regular liner replacement as it wears
Aluminum wire handling
Rolliner 3G
Clean transport, no surface abrasion
Conventional liner
Shaving, bird-nesting, compression issues
Energy chain performance
Rolliner 3G
Designed for it: 70 mm radius, consistent rolling contact through dynamic paths
Conventional liner
Degrades with repeated flexing and multiple bends
Maximum reliable length
Rolliner 3G
Up to 25 m per conduit, extendable
Conventional liner
Best on short, straight runs
Assembly
Rolliner 3G
Tool-free, snap-together elements
Conventional liner
Cut-to-length, crimped fittings
Wire debris build-up
Rolliner 3G
None: rollers don't abrade wire
Conventional liner
Accumulates shavings that cause progressive jams
| Friction coefficient | 0.08 (per MIGAL.CO testing) |
|---|---|
| Maximum wire diameter | 1.6 mm (0.062″) |
| Maximum conduit length | 25 m (extendable with hose connectors) |
| Minimum bending radius | 70 mm |
| Maximum wire feed speed | 30 m/min |
| Compatible wire materials | Steel, stainless steel, aluminum, copper, bronze (all round wire types) |
| Maintenance | Maintenance-free for several years |
| Manufactured by | MIGAL.CO GmbH, Germany |
| US distribution | Inmotion, Jacksonville FL |
Rolliner is made in Germany by MIGAL.CO GmbH and distributed in the US by Inmotion.
Reordered by US welding distributors supplying defense and heavy industry.
Rolling friction is 0.08, sliding friction 0.20. That gap looks small until you add bends: at 1,080° of total bend, a sliding liner needs almost ten times the pull.
Price one jam, then price the upgrade. A jam mid-bead means arc extinction, grinding, a repair weld, and a restart. Add up what that cycle costs on your line and compare it with the price difference.
The liner budget is recurring. Rolliner's isn't.
Made in Germany by MIGAL.CO GmbH. Engineered and manufactured in Germany. Purpose-built for robotic wire feed, not adapted commodity hardware.
US distribution and support from Inmotion. Sold and supported in the US. Ships within one week of your order. Quotes, delivery, and after-sale help from a US team.
Your customer doesn't care which part failed. They want the cell back. Rolliner gives you an answer for the runs a liner can't handle: long routes from central drums, energy chains, aluminum wire. Bring us the application and we'll help you size the run and quote it.
Up to 1.6 mm (0.062″). That covers the standard range for MIG/MAG robotic welding. For thicker wire up to 4.0 mm, the Rolliner XL2 is the right variant.
25 meters for a single section. Hose connectors let you join sections for longer runs. For very long runs, a MIGAL.CO RoboFeed assist system can be added mid-line.
Yes, and this is one of its strongest applications. Aluminum wire is soft enough that conventional liners shave material off the surface. Rolliner's rolling contact doesn't abrade the wire, so there's no shaving, no debris build-up, and no progressive friction increase.
Under normal operating conditions, it doesn't. The roller elements don't wear the way liner material does. Maintenance-free for several years.
Yes. Snap additional elements on to extend. Use a separation tool to shorten. No crimping or special fittings required.
70 mm. Tight enough for standard energy chains and robot arm joints without degrading wire feed.
Yes. The Rolliner XL2 handles wire up to 4.0 mm and is designed for high-deposition and submerged arc applications. The Rolliner NG is a lighter, flexible variant for weight-sensitive arm-mounted routing.
As a planning figure, MIGAL.CO recommends about 1,200° of total bend for safe continuous running, compared with about 500° for a sliding liner. Add a RoboFeed feed assist for routes beyond that.
Inmotion, Jacksonville FL. US sales and support directly.
Tell us about your application and we'll send a configured quote. Pricing depends on run length and configuration.
Wire feed reliability becomes a fixed property. Rolling contact at 0.08 friction coefficient stays consistent over the life of the conduit. Install it once.
Works across aluminum, steel, stainless, copper, and bronze. One conduit system handles your full wire range.
Designed for energy chain routing. 70 mm minimum bending radius, consistent performance through dynamic paths that wear conventional liners out fast.
Tool-free. Adjustable after install. Snap together, extend if the cell layout changes, shorten with a separation tool.
Made in Germany by MIGAL.CO GmbH. Supported in the US by Inmotion. US quotes and support. Ships within one week of your order.
A US-based specialist will get back to you within 24 hours.
Thanks, we've got it.
A US-based specialist will be in touch within 24 hours.
Prefer to talk now? → +1 312 547 9253 · office@inmotion.global