Crawler Belt Heat Shrink Tunnel Oven for Continuous Wire Sleeve Shrinking WM-666

Name: Crawler Belt Heat Shrink Tunnel Oven for Continuous Wire Sleeve Shrinking WM-666
Brand: Wiromac
SKU: WM-666

CE Certified HS Code 8419.89 Sleeve OD < 10 mm 2,000 pcs/h

The WM-666 shrinks sleeves in a continuous stream — twin timing belts grip each wire and carry it through the heating tunnel and cooling zone, delivering around 2,000 pieces per hour with nobody holding a heat gun. It shrinks sleeve up to Φ10 mm over lengths up to 60 mm on wires from 195 mm long, heated by two 1,000 W boards with working temperature adjustable up to 700 °C. Finished wires collect at the end of the belt for single or batch removal. The 40 kg bench unit measures 110 × 23 × 35 cm and runs on 220 V, 50 Hz.

Specifications

Function	Continuous belt-fed heat shrinking of sleeves on wires
Heat diameter	< 10 mm
Heat length	< 60 mm
Wire length	Min. 195 mm
Output	2,000 pcs/h
Working temperature	0 – 700 °C
Heating board	1,000 W × 2
Fuse	Motor 30 A; temperature control 30 A
Voltage	AC 220 V, 50 Hz
Weight	40 kg
Dimensions	110 × 23 × 35 cm
HS Code	8419.89 (common reference — final classification confirmed by your customs broker)
Certification	CE (certificate provided with shipment)

Key features

Upper and lower timing belts clamp each wire and carry it through the tunnel — feed the next piece as soon as the last one has entered, with no cycle to wait out
Tunnel heating from both sides shrinks the sleeve evenly all round, ending the scorch marks and half-shrunk spots of hand-gun work
Two 1,000 W heating boards with temperature set up to 700 °C keep belt speed high enough for around 2,000 wires per hour
Heating, cooling and collection sit on one belt path — pieces arrive cooled at the end tray, ready to remove one at a time or as a batch

What it processes

Splice and solder-joint insulation sleeves shrunk in a continuous stream on harness wires
Printed identification markers fixed at wire ends across whole production batches
Small-diameter protective sleeves on electronic leads and connector tails

Suited for: high-volume shrinking of small pre-positioned sleeves — splice insulation, printed markers and end sleeves under Φ10 mm and 60 mm long, on wires of 195 mm or more, flowing through at around 2,000 pieces per hour. Not suited for: large-diameter or long sleeves, whole bundles and mid-harness sections — for those, pick the WM-664 infrared harness heat shrink oven, which takes harness sections up to Ø100 mm, or the other larger ovens in the heat shrink processing category — and it does not cut or position the sleeve itself.

Shrink ratio and wall thickness change how fast a sleeve sets, so we prove it first: send 2–3 meters of your wire with your actual sleeves fitted and we run them through this oven on video before you commit.

Engineering knowledge

Choose and troubleshoot this process

Heat Shrink Defects: Causes and Corrective ActionsTroubleshoot incomplete recovery, wrinkles, splits, scorching, sleeve movement, trapped air, uneven adhesive flow and heat damage.
How to Choose Heat Shrink Processing EquipmentChoose heat shrink equipment by sleeve material, recovered dimensions, adhesive requirement, harness geometry, heating method, takt time and validation plan.

Neither machine quite fits? New configurations reach our application engineers before they reach the catalog. Tell us your material and process; we will confirm what we manufacture and support, then recommend the right configuration. Get a tailored recommendation →

WM-666 — common questions

How does continuous feeding work in practice?

The wire is clamped between the double-sided timing belts at the infeed. Once the previous wire has fully entered the machine, the next one goes straight in — the belts carry each piece through the heating zone and cooling zone in turn, and finished wires gather at the collection end where they lift off individually or all together after a few seconds of cooling.

What sleeve and wire sizes does it take?

Sleeve diameter under 10 mm and heated length under 60 mm, on wires at least 195 mm long so the belts have enough wire to grip and carry. Temperature adjusts from 0 to 700 °C to match sleeve wall and shrink ratio.

What is the WM-666 not meant for?

Sleeves thicker than Φ10 mm or longer than 60 mm, and whole-bundle or mid-harness shrink jobs — those belong on the larger ovens in the heat shrink processing category. It also does not cut sleeve or place it on the wire; it only shrinks what is already positioned.