WYMA® –Known China Pneumatic Die Grinder Suppliers & Factory. Specializes in professional Air Die Grinders for metal engraving, grinding, and industrial detailing. As ISO-certified Manufacturers, we provide bulk orders and customized configurations for superior performance. Engineered to enhance productivity, WYMA deliver optimal results with professional global technical guidance and after-sales services.
We make extended-length styles, right-angle (L-type) elbows style, high/low speed versions and eight-petal sanding machines–all priced lean through factory direct sales. Our air die grinders use aircraft-grade plastics steel, steel alloys, and ductile iron to craft bearings, rotors, and cylinders specifically for your shop's demands. You get tough build quality, engineering calibrated to your needs, stock ready to ship, and backup from our pro team when needed. We offer ODM, OBM, OEM services with logo customization. Replaceable parts: Flint grinding head , Eight-petal grinding head, Octagonal sandpaper for Eight-petal sand machine, chuck(3mm/6mm), multi-standard connectors( GB/BSP/NPT ) and pneumatic tool lubricants. Backed by MD-CE certification, all our pneumatic die grinders comply with stringent EU mechanical safety standards for reliable operation, displayed at CIHF, AIFME, CISMEF expos (e.g., CIHF 2009-2016).
Product’s Parameter (Specification)
■ Extended Grinder■ Right Angle Grinder
Model
Collect Size
Free Speed
Product Size
Air Consumption
Air Pressure
Weight
WM-3301
1/8’’, 1/4’’
25000RPM
120*34mm
9 CFM
0.6-0.8Mpa
0.3 kg
WM-3303
1/8’’, 1/4’’
25000RPM
152*34mm
9 CFM
0.6-0.8Mpa
0.37 kg
WM-3304
1/8’’, 1/4’’
22000RPM
170*39mm
9 CFM
0.6-0.8Mpa
0.57 kg
WM-3304Q
1/8’’, 1/4’’
3500RPM
215*40mm
9 CFM
0.6-0.8Mpa
0.8 kg
WM-3305L
1/8’’, 1/4’’
18000RPM
155*77mm
4 CFM
0.6-0.8Mpa
0.5 kg
WM-3306
1/8’’, 1/4’’
22000RPM
280*33mm
9 CFM
0.6-0.8Mpa
0.65 kg
WM-8303G
1/8’’, 1/4’’
25000RPM
160*40mm
4 CFM
0.6-0.8Mpa
0.38 kg
WM-8304G
1/8’’, 1/4’’
22000RPM
180*46mm
4 CFM
0.6-0.8Mpa
0.58 kg
WM-8305LG
1/8’’, 1/4’’
15000RPM
170*45mm
4 CFM
0.6-0.8Mpa
0.69 kg
WM-8305QG
1/8’’, 1/4’’
4000RPM
215*45mm
4 CFM
0.6-0.8Mpa
0.83 kg
WM-8306G
1/8’’, 1/4’’
20000RPM
291*39mm
4 CFM
0.6-0.8Mpa
0.68 kg
WM-3308
1/4’’
24000RPM
180*40mm
9 CFM
0.6-0.8Mpa
0.8 kg
WM-3308-300
1/4’’
24000RPM
268*41mm
9 CFM
0.6-0.8Mpa
1.0 kg
WM-3308-360
1/4’’
24000RPM
300*41mm
9 CFM
0.6-0.8Mpa
1.2 kg
WM-3308-450
1/4’’
24000RPM
408*41mm
9 CFM
0.6-0.8Mpa
1.4 kg
WM-3308-580
1/4’’
24000RPM
547*41mm
9 CFM
0.6-0.8Mpa
1.73 kg
WM-3310
1/4’’
18000RPM
150*37mm
21 CFM
0.63Mpa
0.8 kg
WM-3316L
1/4’’
18000RPM
265*76mm
4 CFM
0.6-0.8Mpa
0.85 kg
WM-3338MN
1/4’’
22000RPM
220*39mm
3.7 CFM
0.6-0.8Mpa
0.58 kg
Product’s Applications
WYMA Pneumatic Die Grinder delivers versatile models for professional applications like deburring, engraving, wood and furniture sanding, metal rust removal and polishing, welding seam treatment, tire repair grinding, mold finishing, wire drawing, stone carving, and drilling. Our specialized models excel in distinct scenarios: Extended handle deep and narrow surfaces for pipe interiors and slots; Right-Angle style access confined spaces like mold cavities and tight corners; High-Speed pneumatic Die Grinders enable fast, fine polishing for precision tasks; Low-Speed models offer high torque for intensive grinding of hard materials; and Eight-Petal Machines provide multifunctional precision in irregular shapes. Each optimizes efficiency across demanding industries.
Join hands with WYMA to make industrial grinding operations more efficient and simple.
Product’s Feature And Details
Outstanding Core Performance
Our Air Die Grinder can runs clean at 22,000RPM with near-zero vibration. What sets it apart? Precise concentricity locked within 0.01-0.03mm even when you're hogging off material fast. Stepless speed control lets your thumb dial power while you work. Your hands will feel less tired after long-time grinding, and also greatly boosting efficiency in demanding workshops.
Versatile Compatibility
WYMA air Die Grinder supports multiple raplacable grinding head — including emery, grinding wheel, tungsten steel, cashmere, flap disc, and nylon fiber type—for seamless versatility across applications. It includes 3mm or 6mm high-precision chucks for stable concentricity during high-speed rotation, allowing one machine to handle diverse tasks like finishing or detail work. This multi-head adaptability increases productivity by eliminating frequent tool changes and enables extended functions such as using octagonal sandpaper with specialized heads to grind irregular shaped surfaces. Moreover combined with optional guides like 180mm to 545mm length for grinding deep and complex space area or 90 degree angle L-shaped guides for tricky&tight spaces, also options like high-speed models for fast polishing or low-speed versions for greater grinding force offer flexibility, allows that the various usage scenarios of buyers are met.
Advanced Material Customization
We can build the core parts to your specs—pick aerospace plastic-steel, aerospace plastic, alloy steel, or ductile iron for rotors and cylinders based on your workshop’s needs. Every aerospace plastic-steel rotor gets hollowed out to increase air intake and push greater power while shedding weight. This also boosts max speed for efficient grinding, cuts wear, and keeps them explosion-proof. Pair them with high-density fiber blades that resist cracking under heavy pressure even these keep grinding reliably when lubricants runs light.
Durability and Stability
We make the WYMA Air Die Grinder tough where it counts. Our cylinders use ductile iron, forged with mature CNC-controlled heat treatment. This gives us airtightness and wear resistance that standard powder metallurgy style can't match, so you won't get air leaks with our products. We pair a wear-resistant air cylinder with rotor sleeves built to exact specs. This combination keeps the power steady, shift after shift. Built-in switch and speed valves put control right where you need it.
User-Friendly and Safe Operation
Easy to maintain, WYMA’s Pneumatic tools requires only a few drops of pneumatic tool lubricants in the intake before and after use, ensuring low-friction operation. Since there is no electrical sparks, it operates safely in hazardous environments without vibration and supporting continuous use for over 10+ hours.
This effortless upkeep and robust design, paired with features like nylon heads for wood or metal, make WYMA air die grinder an recommended choice for producting efficiently all day.
For inquiries about Pneumatic Diaphragm Pump, Pneumatic Grease Pump and Air Impact Wrench or price list, please leave your email to us and we will be in touch within 24 hours.
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