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50mm straight shank hand reamer H820mm21mm22mm23mm24mm

discount 70% in 2018-09-21 to 2018-09-23
price: USD$ 118.30
freight :USD$18.00,(Express)
freight :USD$7.00,(Postal parcel)
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1Hand reamer

A rotating tool with one or more cutter teeth for removing the thin metal layer on the machined surface. After the cutter processing after the hole size and shape can be obtained.
Hand reamers for reaming workpieces have been drilling (or hole) after machining holes, mainly in order to improve the machining precision of hole, reducing the surface roughness, tool is used for finishing and semi finishing machining of holes, generally small machining allowance.
Reaming accuracy of hand reamer is H7 and H8 inside hole.

2General considerations for hand reamers

1. the workpiece should be clamped properly
In the 2. reaming process, both hands should be balanced with force
3. be able to reverse the reamer exit, because, after a reamer angle, reamer reversal will make chip stuck between the reamer teeth and the wall of the hole, the hole wall scratch; at the same time, the reamer is easy to wear
.4. reamer should be cleaned, coated with oil, box, so as not to hurt the edge