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Specification
Brand : USA Knifemaker Supply
BulletPoint1 : 70 duro wheels, Aluminum core with quality bearings installed. ***You are purchasing a single wheel***
BulletPoint2 : Idler type contact wheel with aluminum hub and 1/2" ID bearings.
BulletPoint3 : The tire is 1/2" thick. Serrations are approximately 1/4" deep and 1/2" wide. Serrations spaced 3/8" apart.
BulletPoint4 : Polyurethane wheels are some what new to knife grinders but they have been around for decades in various forms and have a proven track record as contract grinding wheels.
BulletPoint5 : 70 duro poly, melting point of 185F ***You are purchasing a single wheel***
Color : G-TITAN-BRSH
CompatibleWithVehicleType : Moped
ConstructionType : Coated
ExteriorFinish : Milled
ExternallyAssignedProductIdentifier1 : 0616639519655
ExternallyAssignedProductIdentifier2 : 616639519655
ItemName : Poly Contact Wheels for 2x72 Grinders-Serrated and Smooth (Smooth-5x2")
ItemOffset : 35 millimeters
ItemPackageQuantity : 1
ItemTypeKeyword : drive-rollers
Manufacturer : USA Knifemaker
Material1 : Rubber
Material2 : Polyurethane
Material3 : Aluminum
Material4 : Alloy
Material5 : Alloy
ModelName : NC282 SERENE
ModelNumber : NC282 SERENE
PartNumber : NC282AR20904635
PitchCircleDiameter : 112 millimeters
ProductDescription : Use a 1/2" shaft to mount these wheels. I use a 1/2" standard bolt. You won't find any 10" serrated wheels anywhere for anything close to this price. We use Machinery Bushings (washers) that are 1/2" ID and with the OD just under the OD of the bearings. Use one on each side of the wheel and standard large fender type washers to center your wheel after that. You can order the machinery bushings from us or your local farm store may have them. On a typical 70A duro wheel, you can push in with your thumb and feel a slight give right under the pressure point where it might flex a few thousands of an inch. 70A durometer hardness is what 95% of the knife makers are using for their contact grinding wheels. These are a low cost substitute for rubber contact wheels. You can use these in the No Weld Grinder Plans. You probably couldn't tell these apart from rubber contact wheels comparing them side by side. They do have a melting point of 185F degrees which is less than a typical rubber wheel so give the wheel a break to cool on extended grinding sessions. This is never going to be a problem for knife grinders but if I don't point it out, some one else will. Someone will ask what is the quality difference between these poly wheels and the Rubber contact wheels you sell? Great question! Quality. These poly wheels are good, Rubber wheels are great. Rubber contact wheels use vulcanized rubber for their contact wheels which has been around for decades and has a proven, long term track record. The hubs are precision CNC milled and the wheels are trued up by Rubber Contact Wheels. The poly wheels are good and becoming increasingly popular due to their lower cost. I'd suggest stepping up to the rubber contact wheel for your main grinding wheel and filling in your wheel tool selection with
ProductSiteLaunchDate : 2020-04-03T13:10:06.105Z
Style : Smooth-5x2"
UnitCount : 1
UnspscCode : 31162702
WebsiteShippingWeight : 32 pounds