SMI Scraping System  |  Part 2 of 3

Brow Pulley

40 min per shift

Avoids 40 minutes of tools-down time per shift, per winch

Brow Pulley
Brow Pulley
The problem, and what changes

Friction of the scraper rope against the hanging wall cuts its life, damages air, water and electrical services, and generates dust. Weakened ropes break repeatedly, and every splice stops the panel. The Brow Pulley lifts the rope clear of the hanging wall at the brow, eliminating all four problems at source with no maintenance requirement of its own.

Underground application
  • Brows in raises
  • Centre gullies
  • Strike ASGs
  • Any elevation transition where the rope runs against the hanging wall
  • Roller lengths to suit narrow and wide raises and ASGs
The condition underground
Underground — the problemHow scraper ropes get damaged todayFilmed underground. The rope running hard against the hanging wall at the brow — the wear that shortens rope life, cuts air and water services, and puts the crew into a 40-minute splice in the middle of the shift. This is the condition the Brow Pulley is built to remove.
Development status
Designed in 2025 — not yet trialled underground. The rollers, bearings and suspension are finalised and the unit is in manufacture in polymer. What it has not had is a shift on a working brow. The trial record on this site belongs to the Corner Pulley; we are not going to borrow it for a product that has not earned it. We are looking for a host shaft.
Specifications
Scraper attachments
Required — sold in sets of two
Rollers
Two polymer rollers with a 1 000 mm working face, on FAG 6208-ZZ-C3 sealed bearings — four per unit
Material
Polymer
Assembled dimensions
1 211 mm overall; 1 200 mm roller assembly; rollers on 200 mm centres
Mounting
Six shackles and two turnbuckles to eyebolts in the hanging wall; the turnbuckles set the working height
Operation
Full rope runs below the bottom roller; empty rope runs between top and bottom rollers

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