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HSK POWER MILLING CHUCK ARBORS HSK63A/100A-HC20/25/32

HSK needle roller type strong milling cutter handle, industry code HC, standard DIN69893, relies on built-in multi column needle roller extrusion C-type strong cylinder clamp to hold straight shank milling cutter, which is the preferred clamping handle for heavy cutting in HSK system.

HSK-A (most universal)

Equipped with automatic tool changing slot and end face transmission key, supporting mechanical arm tool changing and high torque bearing capacity; Lijia, Five Axis, Longmen Mainstream (HSK50A/63A/100A)

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Size	d	D	L	Capacity
HSK63A-HC20-100	20	50	100	3–16 20
HSK63A-HC25-100	25	59	100	3–20 25
HSK63A-HC32-120	32	70	120	3–25 32
HSK100A-HC20-105	20	50	105	3–16 20
HSK100A-HC25-105	25	59	105	3–20 25
HSK100A-HC32-120	32	70	120	3–25 32

Key technical parameters

1. Accuracy indicators

Radial runout: Standard at 4D 0.005mm, high-end precision models 0.003mm

Dynamic Balance: Factory Standard G6.3 15000rpm Precision machining can be customized with G2.5/G1.0

Requirements for tool h

Size	d	D	L	Capacity
HSK63A-HC20-100	20	50	100	3–16 20
HSK63A-HC25-100	25	59	100	3–20 25
HSK63A-HC32-120	32	70	120	3–25 32
HSK100A-HC20-105	20	50	105	3–16 20
HSK100A-HC25-105	25	59	105	3–20 25
HSK100A-HC32-120	32	70	120	3–25 32

Q1: What are the accuracy indicators?
A:

Radial runout: Standard 4D 0.005mm, high-end precision models 0.003mm
Dynamic balance: Factory standard G6.3 15000rpm, customizable G2.5/G1.0
Repetitive positioning accuracy: 0.002mm

Q2: What are the requirements for the tool shank?
A: It must have a precision of h6 and no scratches or bumps on the handle, otherwise it is prone to slipping and excessive jumping.

Q3: What is the clamping range?
A: Mainstream clamping diameter: 6/8/10/12/16/20/25/32mm.

Q4: What are the common overhang lengths?
A:

HSK63A: 80/90/100/105/120/130/160mm
HSK100A: 100/120/160/200mm

Q5: What about the cooling structure?
A: Standard center outlet structure, supporting up to 100bar high-pressure cooling.

Q6: What machining scenarios is it suitable for?
A:

Mold steel roughing: 718, S136, Cr12MoV, P20 large cutting depth and high feed milling
Difficult-to-cut materials: stainless steel, titanium alloy, high-temperature alloy, cast iron heavy-duty surface milling, square shoulder milling
Large diameter cutting tools: rough skin milling cutter, corn milling cutter, extended end mill
Compatible machine tools: HSK-A spindle vertical machining center, five-axis linkage machine tool, gantry milling machine

Q7: What should I pay attention to when using it?
A:

Clean the cone surface and clamping iron chips before installing the tool to avoid excessive jumping
Lock the pressure cap with standard torque, do not over-tighten to avoid damaging the needle roller assembly
For long-term 24-hour heavy cutting, regularly disassemble and clean the rolling needles and add lubricating grease
For deep cavity interference avoidance, choose the ultra-thin and elongated HC handle; for short and rigid working conditions, choose the 80/90 short version
Regularly replace the triple sealing ring to prevent cutting fluid from infiltrating and corroding the needle rollers

Q8: What is the MOQ?
A: MOQ 1.

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HT-TOOLS Catalog 2025

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