The belt of a linisher belt is continuous and runs over rollers. One of the rollers is driven by an electric motor.

Discs and belts are made of abrasive material bonded to a backing of paper and cloth.

Figure 1: Linisher

Linishers

Figure 2: Linisher used for smoothing wood

Linisher used for smoothing wood

PPE:

There will be linisher operations where a dust mask alone is adequate protection.

Figure 3: Linisher with sanding disc and sanding belt, both driven by the same motor

Linisher with sanding disc

Tasks

Hazard

Nips between belts and rollers trapping hands or fingers

Harm

  • Deep cuts
  • Crush injuries
  • Fractures

Controls

  • HOLD workpieces firmly on the table.
  • DO NOT approach the nips.

Hazard

Nips between disc and table, or between abrasive belt and stop, trapping hands or fingers

Harm

  • Deep cuts
  • Crush injuries
  • Fractures

Controls

  • ADJUST table or stop within 2 mm of the abrasive disc or belt.

Hazard

Contact or impact from thrown workpieces

Harm

  • Bruises
  • Fractures

Controls

  • HOLD workpieces firmly against the abrasive belt or stop, using tools or jigs.

Loosely held workpieces are thrown by the abrasive belt.

Hazard

Entanglement with turning wheel or disc

Harm

  • Scalping if hair is caught
  • Crushed body parts

Controls

  • TIE back long hair or beards.
  • WEAR tight fitting clothes, especially sleeves, without long ties.
  • DO NOT wear jewellery.

Loose clothing, long hair, and jewellery can wrap around spinning wheels.

Hazard

Contact or impact from abrasive discs or belts

Harm

  • Deep cuts
  • Bruising
  • Fractures

Controls

  • ENSURE POWER CONTROLS are within easy reach to enable rapid shut down when damaged discs or belts are detected.
  • INSPECT belts before use.
  • LISTEN for noise as the belt starts to break and stop the linisher or stand aside.
  • AVOID damage to belts.
  • Use belts within a SHORT TIME of purchase.
  • DISCARD damaged belts and discs.

Damaged belts will worsen during use, and may become a projectile, hitting the operator or other people close by.

Task – Other (non-mechanical) hazards

Hazard

Sparks and hot metal

Harm

  • Burns to skin
  • Eye injuries
  • Property damage

Controls

  • CLEAN UP flammable dust from grinding flammable material, before grinding iron or steel which may produce hot sparks.
  • REPLACE worn belts or discs before heat builds up excessive.

Flammable material may ignite.

Hazard

Dust

Harm

  • Breathing problems
  • Lung damage
  • Eye irritation or damage
  • Worsening of existing health problems
  • Potential fire or explosion

Controls

  • USE ventilation to extract dust as much as possible.
  • CLEAN up surface dust as quickly as possible.
  • Vacuum cleaners MUST be designed for cleaning dust. Blowing flammable dust with compressed air will only place it elsewhere.
  • USE dust extraction equipment to minimise dust getting in the operator’s breathing zone.
  • ALWAYS USE respiratory protection.
  • ALWAYS WEAR eye protection.

Dust from metals, woods and fibre boards, causes respiratory harm.

Finely divided metal, wood, or plastics dust that is not contained and controlled may fuel a fire or explosion.

Hazard

Noise

Harm

  • Hearing damage or loss

Controls

  • REDUCE noise levels by isolating machines or enclosing within noise barriers.
  • ASSESS noise levels.
  • ARRANGE hearing screenings.
  • WEAR hearing protection.

Task – Maintenance, cleaning & repairs

Hazard

Contact, impact or entanglement from unexpected movement

Harm

  • Bruising
  • Fractures
  • Deeps cuts

Controls

  • LOCK-OUT all power supplies before maintenance, cleaning and repairs.
  • LEAVE the machine in a safe, clean, tidy state.
  • TEST machines regularly to ensure they are operating safety.
  • ARRANGE regular inspections by a competent person. Inspect for damage or wear.
  • REMOVE linishers that fail safety tests and inspections, and DO NOT USE until repaired or replaced.

A safe noise level over an eight hour day is 85dB(A). A linisher may exceed this noise intensity. Instructions MUST be available in a language understood by employees. Inspections MUST be in accordance with the manufacturer’s instructions.