Required Industrial vacuum cleaner heavy duty

Most of the main manufacturers of vacuum cleaners also produce a range of heavy duty or trade versions of their popular cleaners and some of these also produce industrially rated and special purpose cleaners.
A few manufacturers only produce heavy duty types.

Numatic is a very popular supplier of these types and have gained a good reputation over several decades. I have used a heavy duty version of their popular "Henry" cleaner that is still going strong after 30 - odd years.
Numatic produce, in addition to the usual types, a range of hazardous dust vacuums.

Clearly the best choice of cleaner will be one that either does not break down or is one that can be repaired quickly and easily by a local company.
I suggest you approach local companies to discover what they use and their satisfaction with the brand - large hotels for instance.

Inspect the area around the brush roll. There may be something stuck somewhere in there. Remove the brush roll to see if the brush roll end caps will spin freely. If there is hair or debris restricting the brush roll may be causing noise.

the wheel would be properly spaced during manufacture so the problem will be more than a washer
the wheel will probably be held on by a spring toothed washer that has to be pried off first ( difficult but can be done )
the wheel could be worn out or broken in the webs on the inside

Clean out really good. Brush motor, vac motor.

Fried wire internally.

pictures and parts on the link below
http://www.vacsite.com/en/bissell-parts-1/bissell-parts/bissell-93z6-heavy-duty-bagless-upright-vacuum-cleaner-parts.html

Healthy Home Bagless upright vacuum cleaner replacement belt. Genuine Bissell part number 203-1329 or 2031329. Fits All Bissell Healthy Home, and Heavy Duty models including; 5770, 5770-5, 5770-8, 5770-P, 5990, 6100, 6405, 50C9. Belt contains the following code MS 3M-243-12 written on the outside.

You can get the manual on link below. scrool down to Product Details than click on the product manual.

http://www.amazon.com/McCulloch-MC-1275-Heavy-Duty-Steam-Cleaner/dp/B0000DF0RB

Good luck and please rate

I logged into the Kenmore website, entered the vacuum model no. and found that the bag has been superceeded by 20-50004, which appears to be available only from Kenmore. The belt required is #5270.