- 15° right helix spiral, 20° chamfer(standard) for high speed reaming

- Standard H7 tolerance, special point & tolerance or coner radius available on demand

- Speed reaming Vc=40~80m/min, f=0.1mm/rev.per flute, TiN & TiAlN coated

- Best combination if use with our standard YSD Solid carbide drill

Machining case of YSR

- Company : “M” Automotive

- Applied Carbide Speedy Reamer : YSR120-RO.6

- Kind of machine : Machining center, Vertical spindle

- Work-piece : SCM420H, ESP Pinion shaft, HRC27~31
  (See reamed work-piece photo)

- Cutting speed : 1200rpm, Vc=45m/min., f=02.mm/rev.

- Pre-drilling : 11.8mm, cut-off : 0.1mm(one side)

- Coolant : External soluble oil

Resulted in great performance

- Roundness : O=1.8um,

- Roughdness : Ra =0.14um

- Cycle time 650% increase