This is a CNC machined TG150 collet chuck, built for heavy-duty milling and drilling where tool rigidity decides surface finish and tool life. It grips the collet taper with a hardened steel body,
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This is a CNC machined TG150 collet chuck, built for heavy-duty milling and drilling where tool rigidity decides surface finish and tool life. It grips the collet taper with a hardened steel body,
This is a CNC machined TG150 collet chuck, built for heavy-duty milling and drilling where tool rigidity decides surface finish and tool life. It grips the collet taper with a hardened steel body, delivering runout under 0.005 mm at the nose and a clamping force that resists vibration even at 12,000 RPM. Every unit ships from our Dongguan factory within 15 days, with hardness at 58-62 HRC and a surface finish of Ra 0.4 µm on all critical mating faces.
The TG150 collet chuck uses a 15-degree internal taper that matches the TG150 collet series. When you tighten the locknut, the collet is pulled axially into the taper, compressing its slots radially onto the tool shank. This creates a full 360-degree grip—unlike ER collets that rely on a spring action—so the tool stays concentric under heavy axial loads. The result is a TIR (total indicated runout) of 0.005 mm or better at 4× the tool diameter from the nose, measured on every unit before shipment.
We machine the chuck body from AISI 4140 chromium-molybdenum steel, which we pre-hardened to 28-32 HRC before CNC turning. After machining, we nitride the entire body to a case depth of 0.3 mm, bringing the surface to 58-62 HRC. This combination gives you a tough core that absorbs shock from interrupted cuts and a wear-resistant surface that survives thousands of tool changes. The locknut is made from 20CrMnTi, carburized to 58-62 HRC, and the threads are ground after heat treatment to maintain a class 6H fit.
Each TG150 collet chuck goes through a five-step inspection in our QC lab. First, we check the taper angle with a CMM (coordinate measuring machine) to ensure it matches the TG150 standard within ±0.0025 mm. Second, we test the runout with a precision spindle and a 0.001 mm dial indicator—if it exceeds 0.005 mm at the nose, it goes back for rework. Third, we verify hardness on a Rockwell tester at three points on the body. Fourth, we balance the chuck at 12,000 RPM to G2.5 grade. Finally, we test the locknut torque with a calibrated wrench, confirming it reaches 45 Nm without binding.
ER collets collapse under high torque. Their thin walls flex, allowing tool pull-out and chatter. The TG150 collet has a thicker wall cross-section—about 40% more material than an ER32 of the same gripping range—which means it can transmit higher torque without the tool slipping. In our own shop, we ran a 20 mm carbide end mill at 8,000 RPM with a 3 mm depth of cut in 4140 steel. The TG150 chuck held the tool without measurable runout shift after 200 passes. An ER32 collet under the same conditions showed 0.02 mm runout growth and visible wear marks on the tool shank.
We machine the TG150 chuck body to match standard spindle interfaces: BT30, BT40, BT50, CAT40, CAT50, HSK-A63, and HSK-A100. The gripping range covers 3 mm to 26 mm in 1 mm increments, which covers most end mills, drills, and reamers used in heavy machining. Each chuck comes with one TG150 collet in your chosen size, but you can order additional collets individually—we stock every size from 3 mm to 26 mm and ship them in 5 days. We also offer custom shank lengths and flanges for special spindles, with a 5-day engineering lead time for the drawing.
| Parameter | Value |
|---|---|
| Body material | AISI 4140 pre-hardened, nitrided |
| Locknut material | 20CrMnTi carburized |
| Surface hardness (body) | 58-62 HRC |
| Case depth (nitride) | 0.3 mm |
| Runout at nose | ≤ 0.005 mm |
| Runout at 4× diameter | ≤ 0.008 mm |
| Surface finish (mating faces) | Ra 0.4 µm |
| Taper angle accuracy | ±0.0025 mm over 50 mm |
| Balance grade | G2.5 @ 12,000 RPM |
| Gripping range | 3 mm – 26 mm |
| Spindle interfaces | BT30/40/50, CAT40/50, HSK-A63/A100 |
| Lead time | 15 days for standard, 20 days for custom |
| MOQ | No MOQ—order 1 or 100 |
We run three shifts in our Dongguan factory, with 12 CNC lathes and 8 machining centers dedicated to tool holder production. The TG150 chuck body goes from bar stock to finished part in 2.5 hours of machining time. We parallelize the locknut and collet manufacturing on separate lines, so they finish at the same time as the body. After heat treatment, which takes 48 hours in our in-house furnace, we do all grinding and inspection in one day. This workflow means a standard chuck leaves our dock 15 days after you approve the drawing. For urgent orders, we can compress that to 10 days with a 10% rush fee.
There is no MOQ—you can order a single TG150 collet chuck for testing, and we ship it via DHL within 15 days.
Yes, we can machine any shank length, flange diameter, or pull stud configuration—just send your spindle drawing, and we will confirm the design within 24 hours.
Every custom unit goes through the same five-step inspection as standard parts: CMM taper check, runout test, hardness test, balance test, and torque check—all recorded and sent with the shipment.
Repeat orders ship in 10 days because we keep the raw materials and tooling programmed—just email us the part number and quantity.
You are buying directly from the factory in Dongguan, China, so there is no middleman markup. A standard BT40 TG150 chuck with one collet is $68.50 FOB Shenzhen. Add $12 for a CAT40 or HSK-A63 interface. Custom shank lengths cost an extra $8 per unit, and we waive that fee for orders above 20 pieces. To get a firm quote, send your drawing or spindle specification to our sales engineers—we respond within 12 hours with a unit price, lead time, and shipping cost. If you are unsure about the interface, our team will help you match it to your machine. For more on selecting the right tool holder, see our CNC cutting tool selection guide. And if you need to verify your machine's tolerance requirements, check our CNC machining tolerances guide.
This TG150 collet chuck is a precision manufacturing product, made in China, with no MOQ, and built to outlast your machine tool. Email your drawing to sc@bquq.com, or message us on WhatsApp at +86 13713157787. You will have a firm quote within 12 hours—not a placeholder, but a confirmed price and ship date.
| Parameter | Capability |
|---|---|
| Materials | AL6061/7075, SUS303/304/316, 45# steel, T2 copper, H59 brass, POM, PEEK, nylon |
| Tolerance | ±0.005mm standard, ±0.003mm on request |
| Machines | 3/4/5-axis CNC, turn-mill, Swiss lathe |
| Surface | Anodizing, nickel, zinc, passivation, sandblast, polish |
| Size Range | Max 400 x 300 x 200 mm |
| Prototype | 72 hours, no MOQ on samples |
| Inspection | Full report per batch, CMM data on request |
