Semi-Automatic Heat Shrink Tube Heating Machine with Interchangeable Air Outlets WM-661B

Name: Semi-Automatic Heat Shrink Tube Heating Machine with Interchangeable Air Outlets WM-661B
Brand: Wiromac
SKU: WM-661B

CE Certified HS Code 8419.89

The WM-661B is a benchtop hot-air station for shrinking tube onto cable ends and splices without an open flame. A resistance-wire heater and 50 W centrifugal fan push temperature-controlled air through an interchangeable outlet — a curved Ø26 mm round mouth is standard, with straight, extended plum-shaped and U-shaped outlets optional. The controller holds the set point to ±3 °C under a 395 °C safe-use ceiling, and heater life exceeds 10,000 hours below 350 °C. Total power is 2.05 kW on 220 V, 50 Hz, noise stays at 42 dB, and the unit weighs 8.5 kg net.

Specifications

Function	Hot-air heating of heat shrink tube (semi-automatic bench station)
Machine power	2.05 kW
Heating method	Resistance wire heating, 2 kW
Heater life	> 10,000 h (below 350 °C)
Safe use temperature	< 395 °C
Temperature control accuracy	± 3 °C
Air outlet	Curved round mouth Ø26 mm standard — straight round, extended plum-shaped and U-shaped outlets optional
Centrifugal fan	50 W, air volume 198 m³/h, wind pressure 298 Pa
Noise	42 dB
Insulation design	Multi-fiber insulation cotton layer
Power supply	220 V, 50 Hz
Net weight	8.5 kg
Package size	600 × 290 × 380 mm
HS Code	8419.89 (common reference — final classification confirmed by your customs broker)
Certification	CE (certificate provided with shipment)

Key features

Directed hot air instead of an open flame — shrink tube seats evenly around the joint with no scorched jacket and no gas bottle at the bench
Outlet shapes swap to match the job — curved Ø26 mm round mouth as standard, with straight, plum-shaped and U-shaped mouths available for awkward joint positions
Temperature holds to ±3 °C under a 395 °C safety ceiling, so thin-wall tube and printed marker sleeves shrink tight without scorching the print
At 42 dB and 8.5 kg it runs all day beside the operator — quiet enough for a full row of assembly benches side by side

What it processes

Shrinking insulation and strain-relief tube over crimped lugs and battery cable ends
Shrinking printed identification sleeves onto control-cabinet and panel wires
Rework and repair benches replacing damaged insulation on finished harnesses

Suited for: repeat shrinking at the bench — insulation tube over lugs and splices, printed marker sleeves on panel wires, strain-relief on cable ends — with the temperature fixed by the controller instead of the operator’s wrist. Not suited for: thick bundles, metre-long sheathing or all-round chamber heating of a harness section — for bundles and sections up to Ø100 mm, pick the WM-664 infrared harness oven with its enclosed chamber; for the rest, the oven-style machines in the heat shrink processing category are the place to start.

Send us a bundle of your wires with the exact shrink tube you use — we run them at this station on camera and mail the shrunk samples back, so you judge the finish on your own parts before you order.

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-661B — common questions

What does semi-automatic mean on this machine?

Heating and airflow run continuously under the temperature controller — the operator only presents the joint to the air outlet, watches the tube seat, and moves to the next piece. There is no trigger to hold and no gun to pick up and put down, which is where the cycle time is saved.

Which air outlet shape should I order?

The curved Ø26 mm round mouth fitted as standard suits most cable-end and splice work. Straight round, extended plum-shaped and U-shaped mouths are optional — tell us the joint geometry and tube sizes you shrink most, and we advise which outlets to include; more can be added later.

What is it not built for?

Large diameters and long runs — the air stream comes from a Ø26 mm mouth, so it is meant for cable ends, splices and marker sleeves rather than shrinking metre-long sheathing or thick bundles. For chamber-style heating of a whole harness section, see the infrared oven among the heat shrink processing machines.