Description
Mid-sized core drill stands flex and shudder when sinking ten-inch diamond bits through heavily reinforced concrete decks. The Husqvarna Construction DS 250 Mid-Sized drill stand anchors solidly to guide electric core drill motors without carriage deflection. The aluminum column handles diamond core barrels up to ten inches in diameter. Loose anchor bolts will cause mast chatter and fracture diamond bit segments.
Precision-extruded aluminum mast columns mount onto a cast aluminum combination base supported by four leveling jack screws. The roller carriage rides along induction-hardened guide channels using adjustable roller bearings that eliminate carriage play. The base plate features an integrated vacuum gasket channel that seals against smooth concrete slabs. The carriage includes an integrated bubble level and angle indicator for precise drilling up to sixty degrees.
Mid-Sized Drill Stand Hardware Specs
Integrated vacuum bases anchor to smooth concrete slabs without drilling anchor holes. Tilting mast columns guide angled penetrations up to sixty degrees for specialized mechanical piping.
- 10-inch maximum core bit capacity handles commercial plumbing and electrical penetrations
- Extruded aluminum mast column prevents carriage deflection during deep slab coring runs
- Combination base plate anchors via mechanical anchor bolts or vacuum suction pump setups
- Tilting column carriage pivots up to 60 degrees for angled mechanical pipe penetrations
- Adjustable guide rollers eliminate carriage slop along the full column travel length
- Integrated spirit levels guide true perpendicular and horizontal column alignment
- Two-speed carriage feed gearbox optimizes manual advance rates for small and large core bits
Structural Rig Load Telemetry
Structural load cell fixtures measure column deflection and feed resistance during ten-inch diamond coring passes. Under 280 pounds of mechanical downward carriage feed, mast head deflection measures less than 0.005 inches across a five-foot span. Spindle torque resistance reaches 85 foot-pounds without column twist. Carriage travel requires ten inch-pounds of hand-crank input torque in low reduction gear. Decibel meters register 68 dBA during manual carriage feed travel. Guide track surfaces show zero wear under heavy roller loading.
Field Service Operational Traps
Loose anchor bolts allow the mast base to shift, binding the diamond core barrel and stripping drive gears. Plumbers drilling small copper pipe holes have no use for this heavy coring rig. Never operate this drill stand without securing the base with an anchor bolt or vacuum pump.
- Wipe abrasive concrete slurry off the column guide tracks after every shift.
- Adjust carriage roller eccentricity cams to eliminate carriage play every month.
- Grease carriage feed rack teeth with water-resistant chassis grease every week.
Commercial Warranty Package Inventory
Husqvarna covers this drill stand with a 1-Year commercial warranty against manufacturing defects. The carton contains the DS 250 drill stand column, combination anchor and vacuum base, carriage unit, feed crank handle, and instruction manual.