Stanley Hydraulics Underwater Hydraulic Sinker Drill - SK58310
Stanley’s SK58310 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 bit relatively easy. The SK58 uses industry standard drill steel and can drill up to a 3” diameter hole up to 20 feet deep. Air is required to clear holes of debris.
Specifications
Drill Capacity: 3” Diameter Hole, up to 20’ deep
Steel Type: 1” x 4 1/4” Hex Shank
Circuit Type: Open Center
Flow Range: 7-9 GPM / 26-34 LPM
Optimum Flow: 8 GPM / 30 LPM
Working Pressure: 1500-2000 PSI / 105-140 PSI
Full Relief Setting: 2250 PSI / 155 BAR
Rotation Speed: 0-300 RPM
Weight (less bit): 70 LBS / 31.7 KG
Length: 26” / 66 CM
Width (at handles): 18” / 46 CM
Hydraulic Ports: -8 SAE O-Ring
Comes With Couplers: No
Comes With Whips: Yes
Air Port: 1/2” NPT
Manual
Download the SK58 Spec Sheet!
What Our Experts Think
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High-Performance Drilling: The Stanley SK58310 delivers powerful percussive force for efficient underwater rock and concrete drilling.
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Built for Harsh Conditions: Designed with corrosion-resistant materials and a sealed hydraulic system for durability in marine environments.
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Fast & Efficient: Operates at 1200 blows per minute (BPM), ensuring rapid penetration in demanding underwater applications.
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Ergonomic & User-Friendly: Features a well-balanced design with a comfortable grip for improved control and reduced diver fatigue.
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Versatile Applications: Ideal for underwater construction, demolition, and salvage operations.
Q&A
Q: What is the Stanley SK58310 Underwater Hydraulic Sinker Drill?
A: The SK58310 is a heavy-duty hydraulic sinker drill designed for underwater rock drilling and marine construction.
Q: What materials can it drill through?
A: It is designed for drilling into rock, concrete, and other hard surfaces in underwater environments.
Q: What hydraulic flow rate does it require?
A: It operates at 7-9 GPM for efficient drilling performance.
Q: What makes it suitable for underwater use?
A: It features a corrosion-resistant design, a robust percussion system, and a diver-friendly control setup.
Q: What industries use the SK58310?
A: It is commonly used in underwater construction, offshore maintenance, marine infrastructure, and commercial diving projects.
Maintenance Tips
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Pre-Use Inspection – Check hoses, fittings, and seals for leaks or damage.
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Flush After Use – Rinse with fresh water to remove salt, silt, and debris.
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Hydraulic Fluid Maintenance – Use recommended oil; check for contamination and proper levels.
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Bit & Chuck Care – Clean and lubricate regularly for smooth operation.
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Seal & O-Ring Replacement – Inspect and replace worn components to prevent leaks.
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Hose & Connection Checks – Ensure secure, undamaged connections to avoid pressure loss.
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Proper Storage – Keep in a dry, ventilated area away from direct sunlight and extreme temperatures.
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Adhere to Manufacturer Guidelines – Follow Stanley’s service schedule for optimal performance.
