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Alpha PSP-158/PSP-114 High-Performance Pneumatic Polishers
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At a Glance
Quick Decision Guide
Maximum Speed
5,500 RPM
Maximum Power
0.70 HP
Spindle Thread
5/8"-11
Air Pressure
90 PSI
Air Consumption
21 CFM
Water Feed
Central Water-Feed System
Recommended For
Wet Polishing, Drilling & Profiling
Included Hose
30' Twin Air/Water Hose
Why Choose This Product
Key Benefits
High-Performance Motor
Produces up to 0.70 HP at 5,500 RPM
Quarter-Turn Controls
Provide precise air and water adjustment
Central Water Feed
Delivers ample water regardless of tool position
Multiple Applications
Supports wet polishing, drilling and profiling
Extended Working Range
Includes a 30' twin air/water hose assembly
All-Weather Flexibility
Hose remains flexible from -40°F to 140°F
Two Spindle Options
Choose between 5/8"-11 and M14-2 models
Complete Package
Includes hoses, oil, exhaust components and reusable toolbox
Product Information
Product Details
Specifications
Brand
Alpha®
Part Number
PSP-158
UPC
749173430275
Product Type
Pneumatic Polisher
Model
PSP-158
Spindle Thread
5/8"-11
Maximum Speed
5,500 RPM
Maximum Power
0.70 HP
Recommended Applications
Wet Polishing, Drilling & Profiling
Air Pressure
90 PSI (6.2 Bar)
Air Consumption
21 CFM (594 L/min)
Air Inlet
1/4" BSPT
Water Inlet
1/8" BSPT
Water Feed
Central Water-Feed System
Speed & Water Control
Quarter-Turn Switches
Weight
3 lbs (1.37 kg)
Color
Yellow
Included Hose
30' (9.1 m) Kink-Free Twin Air/Water Hose
Hose Temperature Range
-40°F to 140°F (-40°C to 60°C)
Gear Head Cover
Silicone
Included Oil
3.4 oz. (100 ml) Rust Inhibitor Oil
Included Exhaust Hose
Exhaust Hose with Clamp
Included Valve
Quick-Connect Ball Valve
Storage
Reusable Toolbox
Tool Warranty
1 Year
About This Product
5,500 RPM Pneumatic Polishers for Wet Fabrication
The Alpha® PSP-158 and PSP-114 are high-performance industrial pneumatic polishers for wet polishing, drilling, and profiling. Both air-powered polishers produce up to 0.70 HP, operate at a no-load speed of 5,500 RPM, and weigh 3 lbs for maneuverable stone fabrication work.
Quarter-Turn Air and Water Controls
Quarter-turn switches provide precise operating control, while the central water-feed system delivers ample water regardless of the tool's working position. Both models operate at 90 PSI with an air consumption of 21 CFM. The PSP-158 uses a 5/8"-11 spindle, while the PSP-114 provides an M14-2 spindle for compatible tooling systems.
30-Foot Kink-Free Twin Hose Assembly
Each pneumatic polisher includes a 30' twin air/water hose assembly for extended working range around slabs and fabrication tables. The all-weather hose remains flexible from -40°F to 140°F (-40°C to 60°C), supporting maneuverability across a wide range of shop and jobsite temperatures.
Included Accessories and Reusable Toolbox
Each model includes the 30' twin hose assembly, 3.4 oz. of rust inhibitor oil, an exhaust hose with clamp, a quick-connect ball valve, and a reusable toolbox. A silicone gear head cover cushions the tool head while helping insulate the operator's hand from the gear housing.
Product Resources
Documentation & Downloads
Common Questions
Frequently Asked Questions
What are the Alpha PSP pneumatic polishers recommended for?
The PSP-158 and PSP-114 are recommended for wet polishing, drilling, and profiling applications requiring pneumatic power and central water delivery.
What is the difference between the PSP-158 and PSP-114?
The spindle thread is the primary difference. The PSP-158 uses a 5/8"-11 spindle, while the PSP-114 uses an M14-2 spindle. Both models share the same speed, power, air requirements, weight, and operating applications.
What are the speed and power ratings of the PSP polishers?
Both pneumatic polishers operate at a no-load speed of 5,500 RPM and produce a maximum output of 0.70 HP.
How much air do the PSP pneumatic polishers require?
Both models operate at 90 PSI (6.2 Bar) and consume 21 CFM (594 L/min). They use a 1/4" BSPT air inlet.
Do the Alpha PSP polishers have a central water feed?
Yes. The central water-feed system delivers ample water during wet polishing, drilling, and profiling regardless of the tool's working position.
How long is the included air and water hose?
Each model includes a 30' (9.1m) kink-free twin air/water hose assembly for extended working range and maneuverability.
What temperatures can the included hose handle?
The all-weather hose is designed to remain flexible from -40°F to 140°F (-40°C to 60°C).
What accessories are included with the PSP pneumatic polishers?
Each model includes a 30' twin air/water hose assembly, 3.4 oz. of rust inhibitor oil, an exhaust hose with clamp, a quick-connect ball valve, and a reusable toolbox.