The 403A is the pad to use with the Hook & Loop, or Velcro type paper. The 403B uses PSA paper. That is the type that sticks on to the pad with adhesive.
I hope this helps!
-Mark
spins Question by Chris
My random orbit sander spins out of control (very fast) when not under load.
It sounds like the brake ring on your sander has gone out. The brake ring acts like a clutch to control the pad speed when there is no load. When it wears out your sander will spin out of control. The brake ring is part # 421866-9 and is available from http://www.ereplacementparts.com.
Good luck with your repair!
-Mark
5010 Repairs Review by patrick Morris
Same issues as with the other customer, Hook pad short life, bad switch, etc. Came to site to look for replacement pad, and now must decide if it is worth it.
I had the same problem with the hook and loop, but switched to adhesive and have had good luck. I think it was worth the 25 or so bucks. I did just recently have a bearing go out, but found another one at a bearing store in my town for $8. Beats spending another $80 for a new sander. Why they keep making hook and loop sander pads I will never know, they are crap.
Response #2 Posted By Mark
Hook & Loop sanding pads offer many benefits to the woodworker. They offer the ability to change sanding grits quickly. The user may remove and then reattach a sandpaper disc allowing for maximum use and reducing the cost of sandpaper.
The Hook & Loop sandpaper system consists of a sanding pad with fine plastic hooks, which is attached to the sander, and sandpaper discs, which have a looped fabric backing. The loops on the fabric backing are held by the hooks on the sanding pad.
Hook & Loop sanding pads will last through many hundreds of sandpaper discs with proper use. The most common cause of a Hook & Loop pad to wear out prematurely is excessive pressure being applied to the sanding pad. Only enough pressure should be applied to the sander to keep it on the workpiece and to guide the sander in the desired sanding pattern. Excessive pressure creates heat build up in the sanding pad which will quickly damage or even melt the tiny plastic hooks. Once the hooks are damaged they will no longer hold the fabric backing on the sandpaper effectively and the pad will need to be replaced. When excessive pressure is applied it slows or even stops the random action of the sander causing a large increase in swirl marks left on the workpiece.
Best results and fastest sanding will be achieved by using light sanding pressure and a proper selection of sandpaper grits. Start with the coarsest grit needed to quickly remove any rough wood surfaces or uneven glue joints. Once the surface has been smoothed and leveled you can move through the sanding grits to the desired finish. Never skip more than one sanding grit at a time. Skipping grits requires additional time and effort to remove the scratches left by the previous grit. The finest grit needed depends on the type of finish the project will receive. If a film finish, such as polyurethane or lacquer is to be used then 180 or 220 grit will be sufficient. Film finishes can have problems adhering to surfaces sanded finer than 220 grit. If the project is to receive an oil finish then a 400 or even 600 grit finish may be desired.
Response #3 Posted By Mark
Hook & Loop sanding pads offer many benefits to the woodworker. They offer the ability to change sanding grits quickly. The user may remove and then reattach a sandpaper disc allowing for maximum use and reducing the cost of sandpaper.
The Hook & Loop sandpaper system consists of a sanding pad with fine plastic hooks, which is attached to the sander, and sandpaper discs, which have a looped fabric backing. The loops on the fabric backing are held by the hooks on the sanding pad.
Hook & Loop sanding pads will last through many hundreds of sandpaper discs with proper use. The most common cause of a Hook & Loop pad to wear out prematurely is excessive pressure being applied to the sanding pad. Only enough pressure should be applied to the sander to keep it on the workpiece and to guide the sander in the desired sanding pattern. Excessive pressure creates heat build up in the sanding pad which will quickly damage or even melt the tiny plastic hooks. Once the hooks are damaged they will no longer hold the fabric backing on the sandpaper effectively and the pad will need to be replaced. When excessive pressure is applied it slows or even stops the random action of the sander causing a large increase in swirl marks left on the workpiece.
Best results and fastest sanding will be achieved by using light sanding pressure and a proper selection of sandpaper grits. Start with the coarsest grit needed to quickly remove any rough wood surfaces or uneven glue joints. Once the surface has been smoothed and leveled you can move through the sanding grits to the desired finish. Never skip more than one sanding grit at a time. Skipping grits requires additional time and effort to remove the scratches left by the previous grit. The finest grit needed depends on the type of finish the project will receive. If a film finish, such as polyurethane or lacquer is to be used then 180 or 220 grit will be sufficient. Film finishes can have problems adhering to surfaces sanded finer than 220 grit. If the project is to receive an oil finish then a 400 or even 600 grit finish may be desired.
Review by Donald Brewer
Not worth anything. Dust bag will not stay on,had a bad switch,a broken brush when bought and the hook and loop pad wears out too quickly.
It sounds like you have my sander.
I have the same issue(s) with my 5010
I came to this site to look for parts and now I wonder if I might just trash it and go for a new something else.
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