HB 4400 Portable Hydraulic Magnetic Drill

Hydraulic for Marine and Construction – Works Underwater

  • Portable Hydraulic Magnetic Drill
  • Portable Hydraulic Magnetic Drill

Ideal for industrial, construction, marine and mining applications, the HB-4400 drills structural steel and other metals – even underwater.

Hydraulic for subsea drilling in marine and construction - works underwater

Safe & Reliable

• Ideal for industrial, construction, marine and mining applications
• Drill structural steel and other metals
• Hydraulic motor safe for underwater use
• Manually operated permanent magnet with ratchet control has holding strength of 1300 lbs.

Drill up to 2-1/16" dia.

• Uses annular cutters
• Twist drilling up to 1/2 dia.
• Automatic lubrication

  • Overview
  • HB 4400 Specs
  • Standard Equipment
  • Accessories
  • In Action
Twist Drill
Ø 2-1/16" Ø 1/2" Up to 3-3/4" 0-630

Motor Power (Hydraulic) 1.5HP
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 Base Size 7-1/4"W x 3"L
Dimensions 18-1/2"H x 12-1/2" L x 7"W
Magnetic Force (1"plate) 1300 lbs.
Automatic Lubrication Included
HB 4400 Standard Equipment

Standard equipment includes safety straps, allen keys and operating instructions.

With a 3/4" chuck (Part No. 602045A), this model easily converts to a standard drill press with a 3" stroke.

Using the HB-4400 to attach steel repair plates to underwater pylons

Portable Magnetic Drills
Diver Drilling Holes With Portable Magnetic Drill
Steel Repair Plates

Mild steel 3/16" thick was bent to the same shape as the existing bulkhead steel sheeting.
Diver Drilling Holes

Repair plates were bent and holes punched around the perimeter. Plates were lowered over holes and held in place from above. Diver used HB-4400 to drill 15/64" holes around perimeter of plate into pylon.
Diver Secure Steel Plates
Drill Tital Zone
Diver Securing Repair Plates

After the tide dropped to low tide, the work was done without a diver's hat.
Diver Securing Plates  
Diver Secures Steel Plates
HB 4000 Underwater Portable Magnetic Drill
Diver Securing Repair Plates

Diver uses air impact wrench to secure plate to pylon with a single stainless steel self-tapping screw.
Diver Securing Repair Plates

After one screw was secured, the HB-4400 was then used to install 12 to 16 screws around the perimeter of the plate.