Roof Bolt Production Machines

Automatic
Cropping Machines

MTP's Automatic bar cropping and sorting machine is capable of processing up to 2000 bars per hour or 1000 tons per month. (Based on 20mm bar, 1800mm long, a single shift of 8 hours. 22 work days per month and 75% operator and loader efficiency). The PLC controlled 250 ton eccentric press will automatically crop 90° and 45° angles from the same bar. An integrated bar loader will load 8 by 12 or 13metre long, 750MPa reinforcing bars for continuous production. The reference table will automatically and accurately position the bars, between a minimum of 900mm and a maximum of 3000mm for cropping. High production levels are maintained with an automatic offloading and sorting station.

Description	Specs
Cropping lengths	900mm to 3000mm, longer on request
Cycle time	2000 bars per hour
Material specifications	Reinforced bar, 12 - 20mm, 750 MPa
Cropping angles	Programmable 90° or 45°

Automated
Highspeed Thread Rolling Machines

MTP's Automated highspeed thread rolling machines utilizes flat rolling dies and are capable of processing up to 1000 tons of unpeeled roof bolts per month. (Based on 20mm bar, 1800mm long, a single shift of 8 hours. 22 workdays per month and 75% operator and loader efficiency). The integrated loader allows for continuous production with a single operator.

Oil filtering system with magnetic separator for scale.
Safety guards.

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Description	Specs
Rolling lengths	Up to 3 metres
Cycle time	2 seconds per thread
Material specifications	Reinforced bar, 12 - 20mm, 750 MPa unpeeled
Threading length	160mm maximum

Automated
Nut Applicator and Nibbing Machines

MTP's automated nut applicator and nibbing machines can process up to 480 tons of roof bolts per month. (Based on 20mm bar, 1800mm long, a single shift of 8 hours. 22 work days per month and 75% operator and loader efficiency).

Automated nut applicator and nibbing machines consist of a sorting and loading table which insures the correct positioning of the bars, a vibrating nut sorter to supply the nut applicator, which in turn spins the nuts onto the thread, a nibbing press with a backstop to accurately position and nib the threads and a spinning head to spin the nut back onto the nib.

Oil filtering system with magnetic separator for removing bar scale.
Safety guards.

Description	Specs
Rolling lengths	Up to 2.4 metres
Cycle time	4.3 seconds per roof bolt
Material specifications	Reinforced bar, 12 - 20mm, 750 MPa

Automated
Multi-spindle Drilling Machine

MTP's automated multi-spindle drilling machines are of a gantry design and have three drilling heads. Each head is equipped with 7 spindles to drill shear pin holes in 21 roof bolts and nuts simultaneously. The spindles are set on a 50mm centre to centre pitching and each spindle has an ER20 style mounting with a maximum drilling capacity of 13mm. The dual sided manually operated shuttle table allows increased through put with one side being manually unloaded and loaded whilst the other side is running an automated drilling cycle. Each side is equipped with nut guides and drill bushes for accurate drilling. Each table has hardened steel strips with positioning notches to prevent wear.

Coolant system.
Safety guards.

Description	Specs
Bar lengths	3 metres
Cycle time	Typically 42 bars per minute
Pin diameter	4 or 5mm