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China SPU Drill Chuck Holder - BT, HSK-A, SK Models from Reliable Suppliers and Factory
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 |
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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
SPU 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 is the difference between HSK-A-SPU, BT-SPU, and SK-SPU drill chuck holders?
The main difference lies in the shank interface type. HSK-A-SPU uses an HSK-A hollow taper shank for high-speed applications, BT-SPU uses the BT (MAS-BT) dual-contact taper shank widely used in machining centers, and SK-SPU uses the SK (ISO 7388) steep taper shank. All three series are compatible with SPU drill chucks.
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 feature a guaranteed runout (X3D) of ≤ 0.05 mm, ensuring high precision during drilling operations and minimizing tool wear.
Q
Is a wrench included with the SPU drill chuck holder?
Yes, a wrench is included with every SPU drill chuck holder. Dedicated wrench specifications are available for SPU8, SPU13, and SPU16 chuck sizes (model numbers SP-SPU8, SP-SPU13, and SP-SPU16 respectively).
Q
What clamping range do the SPU drill chucks support?
The clamping range depends on the chuck size: SPU8 supports 0–8 mm, SPU13 supports 0.3–13 mm, and SPU16 supports 3–16 mm. This covers a wide variety of standard drill bit diameters used in CNC machining.
Q
Which BT shank sizes are available for the BT-SPU drill chuck holder?
The BT-SPU series is available in BT30, BT40, and BT50 shank sizes, covering a broad range of machining center spindle interfaces. Multiple chuck sizes (SPU8, SPU13, SPU16) and gauge lengths are offered within each BT size category.
Q
How do I select the correct SPU drill chuck holder for my machine?
First, identify your machine spindle interface (HSK-A, BT, or SK) and the required shank size (e.g., BT40, SK40, HSK63A). Then select the appropriate chuck size (SPU8, SPU13, or SPU16) based on the drill diameter range you need. Finally, choose the gauge length (L) that suits your workpiece depth requirements.