WYMA Pneumatic Tools 


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Pen Grinder WM-3320

Pen Grinder WM-3320

Intake pipe diamete
Intake pressure
Air consumption
Free speed
Chuck range
Total length
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/  Product Description
Small size, light weight, pen-shaped design, easy to use with one hand, precision designed blade grinder, safe and durable, high-speed rotation, can adapt to high-speed precision machining, excellent internal design, coreless vibration, long-term operation, rear exhaust, belt Silencer tube, anti-chip scattering, low noise, easy to use, convenient for loading and unloading.

Pen type grinding machine is widely used in the maintenance
Processing, rest and maintenance of abrasive tools, and the hairdressing surface treatment tools are small in size, light in weight and easy to operate.
High quality bearings
Extending the service life.
Equipped with four bearings
Improve its concentricity, minimal vibration, comfortable operation and no vibration.
After the exhaust design
Pay the silencer tube to reduce noise.

Suitable for precision grinding of various metals; cleaning, chamfering, grinding, engraving, internal processing of various metals; plastic, stone, wood, all kinds of welding surfaces Polishing and polishing...

/  Brand strength

Company Profile

Professional brand is trustworthy


Foshan Nanhai Haiyirong Pneumatic Tools Co., Ltd. specializes in pneumatic tools for 15 years, mainly based on “WYMA” pneumatic tools.
WYMA pneumatic tools have a strong technical team, from technical advice to Product mold development, design and application, the selection of accessories, all from the sex Price to configure from the highest angle, provide one-stop service, lifelong dimension Protection. We have 15 years of practical experience, providing quality and perfect After-sales service has been praised and selected by many buyers!


WYMA pneumatic tools teamed up with over 1000 dealers, selling network radiation All over the country and Southeast Asia.
Factory main products: pneumatic screwdriver, toggle wrench, wind gun, pneumatic grinding Machines, pneumatic mills, spray guns, nail guns and pneumatic rivet guns.

Technical team
Customer service team
Maintenance team

In stock Full day delivery

Strength business storage warehouse, inventory is full, welcome to join procurement

▶ The workers are busy with the stocking and delivery, and the online and offline dealers all unify the same day delivery.

▶ A corner of the shelf
▶ Corner of the warehouse
▶ Factory Windmill Exhibition Hall
▶ Factory material reserve

Qualification certificate

Professional brand Trustworthy

/  Product customization
We have a strong technical team, from technical consultation to product mold development, design and application, the selection of accessories, from the most cost-effective point of view to provide one-stop service, lifetime maintenance.

How to customize privately?

Communicate with wyma
Feasible plan confirmation
Customized payment
Customized product production
Customized product collection

WYMA pneumatic tools custom instructions

❈ The customized machine is a special product, it is not suitable for no reason to return the goods, and the custom process is entered immediately after the payment is made. The non-product quality problem cannot be returned or exchanged;

❈ Customized products, according to the complexity of the process and the production schedule to give a reasonable delivery date, we deliver within the agreed time, if encountering uncontrollable conditions, will delay delivery and notify the customer;

❈ Customized products, if not specified, apply to our wyma series product warranty regulations.

/  Pneumatic tool instructions
Oil (the pneumatic tools are in the best condition, please be sure to implement them daily)
(1) Please apply oil 3-5 times a day: the oil supply method is to inject 2-3 drops from the air inlet, let the tool idle for 3-5 seconds.
(2) Oil varieties: Please use #15 pneumatic tool oil
(3) In addition to the above-mentioned oil supply, the impact wrench is applied to the striker approximately once a month, and is oiled in the following manner:
● After removing the parts of the striking part, wipe off the old grease
● Apply a new amount of grease to the right amount (about 10-15 cc). If too much grease is added, the torque will be deteriorated.
Compressed air
● Clean and dry compressed air is necessary. Please remove the oil, water and quality in the air compressor and accessories. Please use a three-point combination (oil-water separator, pressure regulator, oiler).
● Please use according to the specific pressure requirements of each model. If excessive air pressure is used, the service life will be shortened and the cause of the malfunction will be caused.
Management on use
(1) Pneumatic tools are very sophisticated tools, do not bump or drop
(2) Do not run for long periods of time
Do not overload, to avoid danger

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