David Brown Santasalo Industrial Gearboxes and Drive Systems
Engineering supply of heavy-duty David Brown Santasalo industrial gearboxes and genuine replacement spares for mining, cement manufacturing, metallurgy, pulp & paper, and power generation. Professional selection of complete drive packages and precision gearing tailored to project specifications.
David Brown Santasalo Industrial Gearbox Portfolio
Complete engineering portfolio spanning D/DX modular gearboxes, VRM vertical mill drives, SAG/AG grinding solutions, AMF flotation units, Quatro paper machinery drives, and HS API 613 turbomachinery packages.
David Brown Santasalo D and DX Series Heavy-Duty Helical and Bevel-Helical Gearboxes
David Brown Santasalo D and DX series heavy-duty industrial gearboxes deliver mechanical drive capability for mining, metallurgy, cement processing, and heavy processing plants.
Modular configurations of parallel helical and right-angle bevel-helical gearing transmit output torque ratings up to 500 kNm under shock conditions. Ductile nodular iron housings and rigid fabricated steel weldments prevent shaft deflection under full torque.
Torque capacity: up to 500 kNm; gear ratios: 1.25–500; 18CrNiMo7-6 carburized gears ISO 1328 Grade 6; pressurized oil lubrication.
David Brown Santasalo VRM Planetary Gear Units for Vertical Roller Mills
Engineered specifically for raw meal, clinker, slag, and coal grinding circuits, David Brown Santasalo VRM bevel-planetary gearboxes drive the grinding table of vertical roller mills.
Mounted centrally underneath the mill table, the gearbox transmits immense drive torque while supporting static and dynamic grinding thrust forces up to 40,000 kN via an integrated multi-pad hydrodynamic or hydrostatic thrust bearing.
Thrust bearing capacity: up to 40,000 kN; drive power rating: 500 to 10,000 kW; hydrostatic table jack lift prior to starting.
David Brown Santasalo SAG, AG and Ball Mill Heavy Grinding Drive Packages
David Brown Santasalo heavy mill drive packages for semi-autogenous (SAG), autogenous (AG), and horizontal ball grinding mills ensure continuous ore comminution under harsh abrasive conditions.
Packages encompass central reduction drives up to 12 MW per line, auxiliary slow-speed inching drives with automated clutching, and custom drop-in open girth gear pinions.
Unit power rating: up to 12 MW; central drive or dual pinion arrangement; auxiliary inching drive with automatic disconnect.
David Brown Santasalo AMF Vertical Flotation and Agitator Gear Units
David Brown Santasalo AMF vertical drive units are purpose-built for mineral flotation cells, leaching tanks, and thickener agitators. The robust housing and widely spaced spherical roller bearings absorb severe bending moments induced by extended impeller shafts in dense slurry.
A proven drywell arrangement prevents lubricant leakage into the process slurry.
Output torque: up to 180 kNm; drywell sealing construction; widely spaced heavy output bearings for bending moments.
David Brown Santasalo CX Series Heavy Belt Conveyor Drive Units
David Brown Santasalo CX series heavy-duty conveyor drives handle overland conveyors, underground incline trunk conveyors, and port bulk ship loaders.
Units incorporate integrated mechanical sprag backstops ensuring instantaneous, non-wearing holdback protection if drive power trips under full material payload.
Parallel helical or right-angle bevel-helical shafts; integrated sprag backstop; high-capacity fan and water cooling coils.
David Brown Santasalo Quatro and SP Pulp and Paper Machine Drive Gearboxes
David Brown Santasalo Quatro and SP series drive units are engineered for paper, board, and tissue machines.
Operating in hot, humid environments up to +90°C near steam cylinders, Quatro multi-shaft gearboxes drive multiple drying cylinders synchronously with ultra-low vibration, preserving web tension without paper breaks.
David Brown High-Speed HS Turbomachinery Gearboxes Compliant with API 613
David Brown HS series high-speed gearboxes and multipliers connect steam turbines, gas expanders, centrifugal gas compressors, and turbogenerators.
Fully conforming to API 613 and ISO 13691 standards, HS units operate at pitch-line velocities up to 200 m/s and shaft speeds to 60,000 rpm on tilting pad hydrodynamic journal bearings.
Speed rating up to 60,000 rpm; power 1 to 55 MW; tilting pad journal bearings; dynamic balancing to ISO 1940 G 1.0.
David Brown Santasalo Genuine Gearing, Shafts, Bearings and Overhaul Kits
To maintain continuous operational uptime and original performance, we supply genuine David Brown Santasalo spare components: carburized pinions, intermediate gear shafts, Gleason bevel gear sets, precision SKF/FAG roller bearings, viton labyrinth seals, and lubricating pump elements.
Manufacturing to original engineering drawings eliminates misalignment and premature wear.
Gear sets up to 6 m diameter; ISO 1328 Grade 6; parts matching by serial number for David Brown, Santasalo, Moventas.
Gearbox Sizing and Application Engineering
Correct selection of David Brown Santasalo gear units requires verified operational parameters: nominal transmitted torque, operational service factors, thermal ratings, input speed, and target ratio.
Vertical mill drives require evaluation of vertical thrust ratings from grinding rollers to configure hydrodynamic multi-pad thrust bearings.
For high-speed HS units, bearing hydrodynamic stability is evaluated to meet API 613 guidelines, while AMF slurry drives are configured to withstand heavy dynamic overhung bending moments.
Genuine Spares Supply and Gear Reverse Engineering
To guarantee operational availability of critical production lines, we deliver factory original gear sets, pinions, intermediate shafts, heavy-duty roller bearings, and sealing arrangements according to gearbox serial numbers.
Carburized and precision ground gearing achieves ISO 1328 Grade 6 accuracy for uniform tooth flank contact and minimal vibration.
For legacy David Brown, Santasalo, and Moventas units no longer in continuous mass production, we offer high-precision drop-in replacement gearing fabricated to original metallurgy specifications.
Modular Architecture of D and DX Gearbox Series
David Brown Santasalo D and DX gearboxes utilize standardized modular building blocks. 25 to 500 across two-, three-, and four-stage layouts in parallel helical or right-angle bevel-helical arrangements.
High-rigidity housings shield rotating shafts from deflections under peak dynamic shock loads up to 500 kNm.
Thrust Bearing Engineering in VRM Mill Drives
David Brown Santasalo VRM vertical roller mill drives combine bevel-planetary reduction gearing with an integrated multi-pad thrust bearing.
Located at the top of the gearbox housing, this heavy bearing directly absorbs downward dynamic grinding forces up to 40,000 kN from grinding rollers, safeguarding the gear mesh from destructive thrust shocks.
AMF Agitator Drive Reliability in Mineral Processing
AMF series vertical drives are optimized for non-stop operation in abrasive flotation cells and chemical leaching tanks. Generous bearing span on the output shaft neutralizes severe bending moments generated by long slurry impeller shafts.
The drywell sealing arrangement prevents lubricating oil from weeping into process mineral slurries.
API 613 Standards for High-Speed HS Turbomachinery
David Brown HS series high-speed gearboxes are designed to API 613 and ISO 13691 standards for turbocompressors and turbine generators.
Integrally forged double helical rotors, hydrodynamic tilting pad journal bearings, and pressurized lubrication ensure vibration-free performance at shaft rotational speeds up to 60,000 rpm.
International Supply and Delivery Terms
David Brown Santasalo gear units and replacement parts are supplied under structured commercial export contracts with comprehensive quality certification, certificates of origin, and complete customs clearance.
Project heavy-lift transport, maritime and rail logistics, and transit insurance provide complete shipment integrity. Exact contract prices and logistics schedules are confirmed in commercial proposals.
