The HSS E1-18MM is a standard internal broaching tool manufactured from premium M2 high-speed steel (HSS), engineered for precision internal keyway and spline machining across metalworking workshops. Its nominal machining diameter reaches 18 mm, belonging to the widely adopted E1 light-duty broach series optimized for low-to-medium carbon steel, aluminum alloy and copper workpieces.
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The HSS E1-18MM is a standard internal broaching tool manufactured from premium M2 high-speed steel (HSS), engineered for precision internal keyway and spline machining across metalworking workshops. Its nominal machining diameter reaches 18 mm, belonging to the widely adopted E1 light-duty broach series optimized for low-to-medium carbon steel, aluminum alloy and copper workpieces.
The blank undergoes full forging, CNC straightening, precise tooth form turning, vacuum heat treatment and multi-stage flank grinding, achieving uniform hardness HRC 64–67 with outstanding red hardness and wear resistance under continuous cutting. Progressive stepped cutting teeth disperse machining load to reduce chatter and surface roughness down to Ra ≤0.8 μm without secondary finishing.
Suited for vertical broaching machines, hydraulic broaching equipment and small bench broachers, this tool serves automotive parts, hardware fittings, gear blank and hydraulic component production. Operators apply EP metalworking cutting oil during processing; regular surface deburring and anti-rust oil coating extend service life. Proper vertical clamping and aligned workpiece positioning avoid tooth chipping, while periodic tooth flank inspection helps eliminate premature failure during mass production.
+86-510-6831-3099
No.105, Huixin Road,Yuqi Industrial Park, Huishan District, hunqi Road, Yuqi Town, Wuxi, Jiangsu Province, P.R.CHINA
+86-137-7105-7666
+86-510-6831-3099