PWM Sales Ltd
Special Offers Hire News
For knowledgeable and friendly advice please call 01405 862 688 or email

What customers have to say about our work

“When I first e-mailed you I got a reply the next day advising me with what to purchase. You also went out of your way to get the grinder I required. You also went out of your way to have a normal conversation by e-mail. It looks like to me that you Paul care about small companies like me even though I live in NEW ZEALAND and also larger ones. Paul you are a credit to your company and may you go on to build it larger as you deserve it.”
Denis Roberts (Manager) New Zealand

“For over fifteen years we have come to rely on PWM and the products they supply. We can depend on them 24/7 to deliver quality, reliable equipment when required. The after sales service and technical support they provide is second to none”.
Active Floor Prep

"PWM go that extra mile to ensure that we receive the best quality equipment and consumables available. They are highly responsive to customer needs and can be relied upon to provide first class support and service."
Chris Macleod, Grimsby Resin Floors

"I feel I must tell you that I am over the moon with
the TV50 and C-tec cutting cowl. I used it for the first time today, and was amazed how well it
worked. It's worth its weight in gold. Thanks very much."
Regards Phil Hone.

Hi Paul,
Thank you for the lead.
Spoke to Rob, very happy with the two TV50’s which he purchased from you 10 years ago. We have now supplied him a new motor & head for one of the units the other is still going strong.
Best regards, Jerry”

"Over the past few years, Paul and his team have earned their place as one of our most valued and trusted suppliers. They offer a range of high quality, innovative products, backed with a level of service and knowledge that is hard to come by these days. Whether it's a large vacuum unit or a 'hard to come by' low cost fitting, PWM go the extra mile to achieve customer satisfaction."
Phil Hirons - Evagrip

“I just want to thank you for all your help when we were in England last week, we would have been in great difficulties, only for your help it was very much appreciated.” Ian & Billy Macauley

View Cart Contents

FAQ - Adapter Ring

FAQ - Adapter Ring

<< Back to list

Price: Please contact us for price, or refer to individual model prices below.

Call us on 01405 862688

The stretchable adapter ring that comes with the Dust Muzzle Ultra is not needed on all grinders. It is only used on grinders with the smaller bearing housings to prevent the hose clamp from pinching off.

The bearing housing is the part of the grinder indicted by #2 in the illustration. The bearing housing will vary in diameter depending on which grinder you own. 

The upstanding fingers (3#in  the illustration) are mode to collapse to accommodate different bearing housing diameters but if the bearing housing is too small, the hose clamp will “pinch off”, making it very difficult to attach the Dust Muzzle Ultra to the grinder.

If the bearing housing is too small, the hose clamp will pinch off the upstanding fingers of the Dust Muzzle Ultra.

The purpose of the stretchable adapter ring (#1 in the illustration) is to make a larger bearing housing so hose clamp pinch off does not occur.

The stretchable ring creates a larger bearing housing.

When the adapter ring is put onto the bearing housing, it presses into the annular ring of the bearing housing, providing a firm grip on the grinder head.

This is the stretchable adapter ring on a Makita GA 7911. It has a 2” bearing housing. Without the adapter ring on this grinder, the hose clamp would pinch off.

This is the Dust Muzzle Ultra on a  Bosch 7” grinder. It has a 2.91” bearing housing. No adapter ring is needed.

Recommended uses of the Adapter ring:

4-5” Grinders

Bearing housing diameters less than 1.80”   Yes
Bearing housing diameters greater than 1.80” Not needed

7-9” Grinders

Bearing housing diameters less than 2.50”   Yes
Bearing housing diameters greater than 2.50”  Not needed

  You might also be interested in one of these items:


Next Day Delivery! We try to keep stock of all items on our website for local collection, if your order is in stock we will try to dispatch it on the same day using a "next day" delivery service! Normally an order received before 4pm will be shipped the same day.

If you 100% need your order next day or would like a before 12 or before 10 service please call us on 01405 862688 to discuss details and costings

Orders placed for delivery outside mainland UK (Ireland) normally take 3-4 days. International deliveries are by agreement.

Popular Product Links

Concrete Liquid Chemical Hardeners, Densifiers and Sealers

PWM Facebook   

Don't forget to subscribe to our mailing list!

* indicates required

Back to top