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hrc55 end mills 2 flute flat end mill

SAMHO HRC55 2-Flute Micro Flat End Mills – SHBS Series (Φ0.2–6.0 mm)

The SAMHO SHBS Series is engineered for versatility and precision in micro-feature machining. Specifically designed for materials up to 55HRC, these solid carbide end mills are the ideal choice for mold manufacturing, medical device components, and intricate 3D surfaces.

Ultra-Micro Range: Precision diameters starting from Φ0.2 mm.

Material Versatility: Optimized for carbon steel, alloy steel, pre-hardened steel, and copper.

Stability: 2-flute spiral geometry ensures excellent chip evacuation and stable cutting.

Efficiency: Factory-tested milling parameters included to maximize tool life and reduce production costs.

In the world of high-precision manufacturing, micro-features require tools that balance extreme accuracy with robust durability. The SAMHO HRC55 2-Flute Flat End Mill is designed to meet the rigorous demands of CNC operators working with aluminum alloys, pre-hardened steels, and non-ferrous metals.

Core Technical Advantages

Superior Micro-Diameter Performance (Φ0.2 to Φ6.0 mm)
Our Micro Flat End Mill series is tailored for processing intricate details and complex curved surfaces. Whether milling micro-fluidic channels or precision electronic housings, these tools provide the dimensional consistency your project requires
Optimized 2-Flute Spiral Design
Engineered to facilitate:
- Rapid Chip Evacuation: Prevents heat buildup in deep-groove or slotting operations
- Cutting Stability: Minimizes vibration and chatter in high-speed CNC environments
- Multi-Stage Capability: Handles roughing, semi-finishing, and finishing cycles with a single tool
Advanced Coating for HRC55 Versatility
Crafted from high-grade solid carbide with a heat-resistant coating, this tool maintains edge sharpness across a wide range of materials:
- Alloy & Carbon Steels: Reliable performance in general engineering
- Copper & Aluminum: Exceptional surface finishes in non-ferrous mold making
- Medical Equipment: High-precision milling of surgical-grade components
Data-Driven Tool Protection
SAMHO provides application-specific milling parameters (Speed, Feed, Depth of Cut) to:
- Protect the tool’s micro-diameter tip
- Improve machining efficiency
- Significantly reduce production costs

Professional Usage Recommendations

Spindle Speed Management: If CNC machine cannot reach recommended RPMs, proportionally decrease both spindle speed and feed rate
Coolant Strategy: Use oil coolant for stainless steels and heat-resistant alloys to prevent edge wear
Precision Setup: For micro-diameter tips (Φ0.2–0.5 mm), use non-contact measuring devices
Vibration Control: Reduce feed rates if chattering occurs to maintain desired surface finish

Why Partner with SAMHO China?

Industrial-Grade Quality: 15+ models covering Φ0.2–6.0 mm in stock
Unbeatable Wholesale Prices: Direct-from-factory deals for global distributors and large-scale workshops
OEM & Customization: Specialized coatings or custom neck lengths available via our dedicated engineering team

Model Number	Cutting Diameter	Flute Length	Usable Length	Taper Angle	Overall Length (OAL)	Number of Flutes	Shank Diameter	In Stock
SHBS2-0020040	0.2	0.4	–	12°	50	2	4	●
SHBS2-0030060	0.3	0.6	–	12°	50	2	4	●
SHBS2-0040080	0.4	0.8	–	12°	50	2	4	●
SHBS2-0050100	0.5	1	–	12°	50	2	4	●
SHBS2-0060150	0.6	1.5	–	12°	50	2	4	●
SHBS2-0070180	0.7	1.8	–	12°	50	2	4	●
SHBS2-0080200	0.8	2	–	12°	50	2	4	●
SHBS4-0100250	1.0	3	–	12°	50	2	4	●
SHBS4-0150400	1.5	4	–	12°	50	2	4	●
SHBS4-0200500	2.0	5	–	12°	50	2	4	●
SHBS4-0250600	2.5	6	–	12°	50	2	4	●
SHBS4-0300800-4	3	8	–	12°	50	2	4	●
SHBS4-0401000-4	4	10	–	–	50	2	4	●
SHBS4-0401000-6	4	10	–	12°	60	2	6	●
SHBS4-0601300	6	15	–	–	60	2	6	●

Work Material	Copper / OFC / Tough Pitch Copper		HRC 30–45 Carbon Steel / Pre-Hardened Steel		HRC 45–55 Hardened Steel
Diameter (mm)	Speed (min-1)	Feed(mm/min)	Speed(min-1)	Feed(mm/min)	Speed(min-1)	Feed(mm/min)
1.0	10000	150	10000	100	8000	60
1.5	8000	180	8000	120	6000	60
2.0	8000	200	7000	120	5000	60
2.5	6000	300	6000	120	4500	60
3	7000	300	5000	150	4000	80
4	7000	300	4000	150	4000	100
4	7000	300	4000	150	4000	100
6	7000	300	3500	250	3000	200

Work Material	Copper / OFC / Tough Pitch Copper		HRC 30–45 Carbon Steel / Pre-Hardened Steel		HRC 45–55 Hardened Steel
Diameter (mm)	Speed (min-1)	Feed(mm/min)	Speed(min-1)	Feed(mm/min)	Speed(min-1)	Feed(mm/min)
0.2	30000	200	30000	120	30000	120
0.3	30000	220	30000	150	30000	150
0.4	30000	300	30000	200	30000	200
0.5	26000	300	26000	200	26000	200
0.6	24000	500	24000	300	24000	300
0.7	20000	500	20000	500	20000	500
0.8	16000	800	16000	800	16000	800
1.0	13000	1000	13000	1000	13000	1000
1.5	13000	1200	13000	1200	13000	1200
2.0	12000	1500	12000	1500	12000	1500
2.5	12000	1500	12000	1500	12000	1500
3	11000	1800	11000	1800	11000	1800
4	10000	2200	10000	2200	10000	2200
4	10000	2200	10000	2200	10000	2200
6	9000	2500	9000	2500	9000	2500