Hydraulic for marine and construction — works underwater - holes up to 2-1/16" dia. About our portable drilling machines Model HB-4400 is ideal for drilling holes up to 2-1/16" dia. in industrial, construction, marine and mining applications. Hydraulic motor is safe for underwater use. Manually operated permanent magnet with rachet control has holding strength of 1300 lbs.   Standard equipment includes safety straps, allen keys and operating instructions.   Cutter capacity up to 2-1/16" dia., stroke: 3-3/4" Twist drill capacity up to 1/2" dia., stroke: 3"     • Ideal for industrial, construction, marine and mining applications • Hydraulic motor safe for underwater use • Drill structural steel and other metals • Stainless steel construction resists corrosion • Manually operated permanent magnet with ratchet control has holding strength of 1300 lbs. • Lightweight, rugged machine for cutting up to 2-1/16" diameter holes with Annular Cutters • Easily converts to a standard drill press with a chuck for conventional twist drills up to 1/2" dia. • Includes automatic lubrication HB-4400 being used to attach steel repair plates to underwater pylons. Model No.: HB-4400 Motor Power (Hydraulic): 1.5 HP Weight: 48-1/2 lbs. Hole Capacity: 2-1/16" dia. Twist Drill Capacity: 1/2" dia. No Load Speed, Variable: 0-630 RPM Hydraulic Supply : Flow 6.5 GPM @ 2000 PSI Magnetic Force (1" Plate): 3080 lbs. Automatic Lubrication: Included Model HB-4400 Schematics (PDF) With a 3/4" chuck (Part No. 602045A), this model easily converts to a standard drill press with a 3" stroke.

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