SMS R1- XL DTH Rotary Head Gearbox

The SMS R1 XL is more than just a rotary head; it is the flagship gearbox that defined our brand. Known across the industry simply as the SMS XL, this powerhouse earned its reputation through relentless reliability in the most demanding waterwell drilling environments. When the job requires maximum torque and heavy-duty endurance, the XL is the only choice for truck-mounted rigs.

Single-Piece Annealed Casting: Unlike standard gearboxes, our housing undergoes a rigorous annealing process to eliminate internal stresses, ensuring the casing never cracks under the massive pressure of deep-well drilling.

120mm Heavy-Duty Spindle: Featuring a massive 120mm spindle diameter and a 45mm flushing hole, this unit is built to handle high-volume air and mud flow for rapid drilling progress.

1-Year Life Capacity Air Seals: A feature provided only by SMS Gears. Our specialized air seals are engineered to last a full year, eliminating the frequent seal failures that plague other rotary heads and keep your rig in the field instead of the workshop.

Primary Applications

Deep Waterwell Drilling: The preferred choice for heavy-duty truck-mounted rigs.

Large Diameter Boreholes: Optimized for high-torque, high-flow requirements.

• Product Details
• Technical Specification

Application	Domestic water well
Drilling Method	DTH/ Rotary
Water well Maximum Depth	165 - 356 mm (6 ½" - 14") - 350m (1000 feet)
Spindle Diameter	120 mm
Hydraulic Motor	OMV or OMT series Motor
Gearbox Housing	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
Motor capacity	OMV or OMT Series Motor
Max Output RPM	0- 200 Rpm (Varies on Hydraulic Motor selection)
Max Output Torque	upto 4000 Nm (Varies on Hydraulic Motor Selection)
Flushing Hole Diameter	40-45 mm
Flushing Medium & Pressure Rating	Air @ 5000 PSI
Max pull up force withstanding capacity	15000 Kgf
Max pull down force withstanding capacity	9500 kgf
Gearbox Oil	ISO VG-220
Gearbox Weight	250 kg's without motor