China HSK-A, BT & SK SPU Drill Chuck Holders - Top Suppliers & Quality Factory Products

Introducing our high-quality HSK-A-SPU, BT-SPU, and SK-SPU Drill Chuck Holders, perfect for precision drilling applications. As a leading manufacturer and suppliers in China, our factory produces these drill chuck holders using top-notch materials to ensure durability and reliability. These holders are designed to provide strong clamping force and compatibility with various drilling machines, making them an essential tool for any workshop. Trust our China-based factory for premium drill chuck solutions that enhance your machining efficiency.

Product Detail

HSK-A-SPU Drill Chuck Holder

Specification	D	d1	d2	L	Weight
HSK50A-SPU8-120	50	50	8	167	1.61
HSK63A-SPU13-150	63	50	13	194	2.65
HSK63A-SPU16-155	63	57	16	199	3.12
HSK100A-SPU13-155	100	50	13	217	4.23
HSK100A-SPU16-160	100	57	16	222	4.55

📌 Notice: Wrench is included.

✅ Feature: Runout (X3D): ≤ 0.05 mm.

BT-SPU Drill Chuck Holder

Specification	D	d1	d2	L	L1	R	Range	Weight
BT30-SPU8-80	46	37	8	80	55	0.05	0-8	0.72
BT30-SPU13-110	46	50	13	110	75	0.05	0.3-13	1.62
BT30-SPU16-120	46	57	16	120	80	0.05	3-16	1.70
BT40-SPU8-85	63	37	8	85	55	0.05	0-8	1.36
BT40-SPU13-100	63	50	13	100	75	0.05	0.3-13	1.76
BT40-SPU13-130	63	50	13	130	75	0.05	0.3-13	2.47
BT40-SPU16-105	63	57	16	105	80	0.05	3-16	2.18
BT50-SPU8-90	100	37	8	90	55	0.05	0-8	4.32
BT50-SPU13-100	100	50	13	100	75	0.05	0.3-13	4.98
BT50-SPU13-130	100	50	13	130	75	0.05	0.3-13	5.50
BT50-SPU13-180	100	50	13	180	75	0.05	0.3-13	6.06
BT50-SPU16-105	100	57	16	105	80	0.05	3-16	4.78
BT50-SPU16-130	100	57	16	130	80	0.05	3-16	5.24
BT50-SPU16-190	100	57	16	190	80	0.05	3-16	6.66

📌 Notice: Wrench is included.

✅ Feature: Runout (X3D): ≤ 0.05 mm.

SK-SPU Drill Chuck Holder

Specification	D	d1	d2	L	L1	R	Weight
SK30-SPU8-80	50	37	8	80	55	0.04	0.72
SK30-SPU13-120	50	50	13	120	75	0.04	1.70
SK40-SPU8-75	63.55	37	8	75	55	0.04	1.36
SK40-SPU13-110	63.55	50	13	110	75	0.04	1.76
SK40-SPU16-125	63.55	57	16	125	80	0.04	2.18
SK50-SPU8-75	97.5	37	8	75	55	0.04	4.10
SK50-SPU13-100	97.5	50	13	100	75	0.04	4.50
SK50-SPU16-105	97.5	57	16	105	80	0.04	4.78

📌 Notice: Wrench is included.

✅ Feature: Runout (X3D): ≤ 0.05 mm.

SK-SPU Drill Chuck Holder — Wrench Specifications

Specification	Tool Holder	Weight
SP-SPU8	SPU8	0.1
SP-SPU13	SPU13	0.12
SP-SPU16	SPU16	0.12

Frequently Asked Questions

Q What types of SPU Drill Chuck Holders are available?

Three main series are available: HSK-A-SPU, BT-SPU, and SK-SPU Drill Chuck Holders. Each series covers different shank standards and is offered in multiple sizes to suit a wide range of CNC machining applications.

Q What is the runout accuracy of these SPU Drill Chuck Holders?

All SPU Drill Chuck Holders in the HSK-A, BT, and SK series achieve a runout (X3D) of ≤ 0.05 mm, ensuring high precision and consistent machining results.

Q Is a wrench included with the SPU Drill Chuck Holder?

Yes, a wrench is included with every SPU Drill Chuck Holder. Dedicated wrench models (SP-SPU8, SP-SPU13, SP-SPU16) are also available separately for each chuck size.

Q What chuck capacity ranges are offered for BT-SPU holders?

BT-SPU holders are available in three chuck capacity ranges: 0–8 mm (SPU8), 0.3–13 mm (SPU13), and 3–16 mm (SPU16), covering BT30, BT40, and BT50 taper sizes.

Q How do I choose between HSK-A-SPU, BT-SPU, and SK-SPU holders?

The choice depends on your machine spindle interface. HSK-A holders use the HSK hollow shank taper standard (HSK50A, HSK63A, HSK100A), BT holders follow the BT taper standard (BT30, BT40, BT50), and SK holders use the steep taper SK standard (SK30, SK40, SK50). Please match the holder series to your machine's spindle type.

Q What materials and applications are SPU Drill Chuck Holders suitable for?

SPU Drill Chuck Holders are designed for precision drilling, reaming, and light milling operations on CNC machining centers. They are suitable for a wide range of materials including steel, aluminum, cast iron, and non-ferrous metals, thanks to their high runout accuracy and robust construction.