BK-7 Screw-driven Bale Opener

Safely open packaged spring bales with the safest, strongest bale opener we've ever made. Designed for today’s coil specifications, the BK-7 will safely handle today’s innersprings with higher coil counts, heavier wire gauge, and new coil designs.

The BK-7 is rated at the industry standards of 18,000 lbs. (8,175 kg) opening pressure and the screw drive rating in excess of 36,000 lbs. (16,350 kg).

Features and Benefits

  • Safety rating of 18,000 lbs. (8,175 kg)
  • Acme screw drive system eliminates replacing drive chains
  • Simple and reliable bale opening for any size bale; including twin, queen, and king size
  • Welded grid members on the top of the platform and additional guards around the edges aid in protecting the operator from flying debris
  • Two-button controls on the control box must be held down during operation, keeps the operator away from the bale and other moving parts during opening
  • Control panel also include hour meter for easier maintenance scheduling
  • Drive channels are turned away from the bale zone to reduce friction in work area
  • Safety rods to stabilize narrows innersprings and corner guides prevent deformation of border rods during opening
  • Meets all OSHA and CE safety directives


Electrical:220V/240VAC, 1 Phase, 50/60 Hz, 40 Amps
Electrical Motor:5 HP (3.7 Kw)
Overall Height:139" (353 cm)
Working Height:109" (277 cm)
Floor Area Required:87" × 113" (221 cm × 287 cm)
Crate size/Domestic:114" × 86" × 31" (290 cm × 219 cm × 79 cm)
Weight:2,500 lbs. (1,135 kg)
Crate size/Ocean:115" × 87" × 32" (291 cm × 221 cm × 81 cm)
Weight:2,600 lbs. (1,181 kg)

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Our catalog provides you with access to genuine Gribetz and Porter International mattress machinery parts. Using genuine parts helps reduce downtime and ensure a low-cost parts and service solution for the life of your machine.