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234681012-20H7 with the whole hard alloy reamer reamer 45 tungsten spiral groove machine

With the spiral reamer machine precision straight shank carbide: H7 new standard. The model description: for example: 10*40*80*6TH7 * * on behalf of blade diameter long blade length * blade precision number!

price:USD$260.00
discount 70% in 2018-09-21 to 2018-09-23
price: USD$ 182.00
freight :USD$18.00,(Express)
freight :USD$7.00,(Postal parcel)
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The whole machine straight shank alloy reamer steel straight shank reamer straight groove 234567891011121314161820 precision H7, non-standard custom.

Need different standard length contact us!

The factory direct wholesale production. You can order the fastest 3-5 days.

 

The small size blade is generally 4 Blade large size is generally 6 edge.

Performance: suitable for processing high hardness quenching products, suitable for processing of chilled cast iron and alloy heat-resistant alloy steel, precision machining can also be suitable for ordinary iron, high wear resistance, good strength.

Machine reamers with precision grade: DD4H7H8H9

DD4 is the old standard, the new standard is H7H8H9.

Levels are: (rank) H7 > D > H8 > D4 > H9

Reamer tolerances are generally add size (commonly known as silk)

Example: 10 mm reamer

D 10.01 mm

D4 10.02 mm

H7 10.005 - 10.01 mm

H8 10.01 - 10.015 mm

 

H9 10.02 mm