Proulx Cutting Heads

UN31 Semi-Matic Head (Bump-feed / Tap and go)

The UN30, now renamed the UN31, was developed in the early 1980's and was the first bump-feed 2 line head manufactured by Proulx Mfg. A very robust and versatile heavy duty nylon head grass cutting head, the UN31 is supplied to OEM's around the world.

The semi automatic system allows for easy indexing of the monofilament during use.

Secure twist mechanism enabling access to internal spool for the renewal of monofilament line

Overhang on sides of head protects eyelet area, and gives the monofilament a sheltering area if user cuts too close to solid object.

Moulded struts on top of the head re-enforces the housing and also helps to inhibit weed wrap

Easily replaceable eyelets.


- Head type Semi-matic - using simple bump-feed action to index line
- Cutting line supplied with 6 metres of 2.4mm professional quality round line
- Head diameter 120mm
- Head weight 340gms
- Bolt type UB (steel)
- Eyelets Aluminium

Packaging: Bulk delivery, polythene bag with branded header card or cardboard box. Head available with or without adapter bolt



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