SMS M3- Blast Hole OMV Heavy Duty Rotary Head Gearbox

SMS M3 Rotary Head Gearbox is the new Benchmark for Blast Hole Drilling. In the demanding environment of open-cast coal mines, equipment failure isn't just an inconvenience—it’s a massive hit to your bottom line. The SMS M3 Rotary Head Gearbox is specifically engineered for blast hole drilling rigs, providing the rugged reliability needed to penetrate hard rock overburden and coal seams day after day. Standard gearboxes often succumb to "stress cracking" due to the constant resonance of blast hole drilling. The SMS M3 housing is made from annealed steel casting. This heat-treatment process ensures the housing is tough enough to absorb high-frequency vibrations without structural fatigue, protecting your internal gear train. To manage the heavy axial and radial loads of 10" hammers, we’ve implemented a four-bearing arrangement on the main spindle. This design minimises spindle "run-out" and ensures that shock loads are distributed across the assembly, significantly reducing wear on seals and gears. While others use machined bar stock, our 130mm spindle is fully forged. This provides a superior grain structure that can withstand the high torque and sudden "snatch" loads common when hitting hard rock pockets or fractured ground in mining pits.

• Product Details
• Technical Specification

Application	Domestic waterfall, Piling, Blast Hole Mining
Drilling Method	DTH/ Rotary/ Piling
Water well Maximum Depth	2000m @165mm (6.5'')
Piling Maximum Depth	10m @ 17" to 47" (water Assisted)
Blast Hole Mining Depth	150 - 250 mm (5.9" - 9.8") Diameter 45m Depth
Spindle Diameter	130 mm
Hydraulic Motor	OMV series Motor
Gearbox Hosuing	MS Annealed, Graded CI (In House)
Center Bearing	Full Casted 4 Bearing Double Bearing Housing Driveline- Heavy Duty Tapper Roller (Timken/ Koyo/ FAG)
Warranty	1 Year Warranty, 10 year Spare part backup
Attachment	Water swivel system @5000 PSI

Gearbox Ratio	3:1 (Grounded Gears)- Smooth Drive 2:1 (Grounded Gears)- Smooth Drive
Max Output RPM	0- 200 Rpm (Varies on Hydraulic Motor selection)
Max Output Torque	upto 4000 Nm (Varies on Hydraulic Motor Selection)
Motor Capacity	OMV Series Motor
Flushing Hole Diameter	40-50 mm
Flushing Medium & Pressure Rating	Air or water @ 5000 PSI
Max pull up force withstanding capacity	13000 kgf
Max pull down force withstanding capacity	30000 kgf
Gearbox Weight	250 Kg's without motor
Gearbox Oil	ISO VG-220