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Diving & Life Support

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SK 58, Sinker Drill

  • SK 58, Sinker Drill
SK 58, Sinker Drill

The Stanley SK58 Sinker Drill is a heavy duty rock drill designed for drilling underwater in concrete, rock and masonry. The feathering on/off valve makes starting the drill bit relatively easy. The SK58 uses industry standard drill steel and can drill up to a 3 inch (75mm) diameter hole up to 20ft (6m) deep. The direct drive rotation motor drives the 1 inch x 4¼ inch Hex shank drill steel and is adjustable between 0 and 300RPM. Air is required to clear holes of debris.

• T-Handle with feathering on/off valve allows easy start and control
• Rotation speed adjustable between 0 and 300RPM
• Stainless Steel spools and fasteners
• Four tie rod design for durability
• Uses standard rock drill steels: 1" x 4¼" Hex Shank
• Drills up to 3" diameter hole up to 20' deep
• Operates in any position
• Requires air to clear holes of debris
• Trouble free drill steel latch retainer

Drill Capacity: 3" (7.6cm) dia. hole, up to 20' (6m) deep
Steel Type: 1" x 4¼" Hex Shank
Circuit Type: Open Center
Flow Range: 7-9gpm / 26-34lpm
Optimum Flow: 8gpm / 30lpm
Working Pressure: 1500 - 2000psi / 105-140bar
Full Relief Setting: 2250psi / 155bar
Rotation Speed: 0-300RPM
Weight (less tool bit): 70lbs / 31.7kg
Length: 26" / 66cm
Width (at handles): 18" / 46cm
Hydraulic Ports: -8 SAE O-ring
Hose Whips: Yes (3 ⁄8" NPT Male thread)
Air Port: ½" NPT

Order Detail  
Sinker Drill, 7/8" Hex X 4 - 1/4, SK58 D-ST-154


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