Observed factory prices for BT, HSK and Cat tool holders, ER collets and pull studs — and the specification fields that explain a 4× spread on the same part number.
Tool holders are the least glamorous purchase in a tool room and one of the easiest places to waste money, because the price range for a nominally identical BT40–ER32 is nearly 4×. Here is what Chinese plants actually list.
| Holder | Specification | Observed price / piece | MOQ |
|---|---|---|---|
| BT40–ER32–70L | standard taper, AT3, G6.3 | $7.80 – 13.99 | 1–10 pcs |
| BT40–ER32–100L | standard taper, longer gauge length | $7.80 – 12.00 | 10 pcs |
| BT40–ER32 | 20CrMnTi, case-hardened, ground | $9.00 – 12.00 | 1 pc |
| BT40–ER32 | balanced G2.5 to 25,000 rpm | $9.80 – 13.00 | 1 pc |
| BT40–ER16–70L | standard taper | $9.80 – 13.00 | 1 pc |
| BT40–ER32 | established manufacturer, 18-year plant | $15.10 – 15.87 | 1–500+ pcs |
| BT40–ER32 | general, mid-tier plant | $13.00 – 18.00 | 10 pcs |
| BT40–ER32 | precision 0.003–0.005 mm, G2.5 | $19.86 – 28.00 | 1 pc |
| BT40–FMB22 face mill arbor | shell mill holder | $16.15 – 20.15 | 2 pcs |
| BT40–ER32 / BT40–ER25 | high-rigidity heavy-duty set | $60.00 – 80.00 | 1 set |
| BT50–ER32–80 / BT50–ER16–150 | standard taper | $12.50 – 19.50 | 1 pc |
| BT50–ER40–150 | standard taper | $3.70 – 20.00 | 1 pc |
| BT30/BT40/BT50 – MTA morse taper adapter | adapter | $8.60 – 20.65 | 1 pc |
| Cat40–ER32–100 | ANSI taper | $13.50 – 15.50 | 5 pcs |
| Shrink-fit chuck (heat shrink) | BT/HSK body | $26.00 – 30.00 | 100 pcs |
| HSK32A/E – ER | high-speed tooling system | $46.00 – 98.00 | 1 pc |
| HSK50A/E – ER | high-speed tooling system | $51.00 – 110.00 | 1 pc |
| HSK63A – ER20 / ER25 | high-speed tooling system | $100.56 – 104.29 | 10 pcs |
| Hybrid heat-shrink / hydraulic, HSK63/50/100 | high-speed | $11.90 – 78.50 | 10 pcs |
Where these numbers come from. Ranges are compiled from publicly listed supplier prices on Made-in-China.com, EC21, Alibaba and manufacturer product pages, observed September 2026, plus reference FOB bands published by Chinese tooling exporters for the Q1 2026 market. They are market observations, not a quotation — a real price depends on your drawing, grade, tolerance class and lot size. Freight, duty and VAT are excluded. Send us a drawing and we will replace every range here with one firm number within 48 hours.
The small parts are where a tooling package quietly goes wrong. A precision holder with a cheap collet in it runs out of tolerance, and the operator blames the end mill.
| Item | Specification | Observed price / piece | MOQ |
|---|---|---|---|
| ER32 (177E pattern) | DIN 6499, 0.008–0.015 mm | $2.42 – 2.69 | 5 pcs |
| ER16 / ER25 / ER32 / ER40, sealed | coolant sealing | $1.70 – 2.90 | 1 pc |
| ER11 – ER40 set | 10 sets | $1.59 – 1.86 | 10 sets |
| ER40 set | 100 pieces | $1.00 – 6.40 | 100 pcs |
| ER8 – ER50, precision | high precision | $2.80 – 7.50 | 2 pcs |
| ERS11 – ERS40, coolant | sealed, through-coolant | $3.90 – 5.50 | 10 pcs |
| Pull stud, BT40 M16 | 20CrMnTi, case-hardened to 58–60 HRC | from $1.15 | 10 pcs |
Both are real listings. The holder at $28 is not a rebadged version of the one at $7.80 — it is a different object made to a different specification, and the differences are all measurable.
| Variable | What it does to the price and the result |
|---|---|
| Taper accuracy class | AT3 is standard. AT2 and AT1 are progressively tighter and cost more. On a BT40 spindle that is not itself AT2, paying for an AT1 holder buys nothing. |
| Runout at the taper | 0.008 mm, 0.005 mm and 0.003 mm are all sold as “precision”. The difference between the first and the third is roughly a 2× price. |
| Balance grade | G6.3 is fine below 12,000 rpm. Above that you need G2.5, and above 20,000 rpm the balancing operation itself is a separate cost line. |
| Body material | 40Cr, 20CrMnTi and 15CrMo all appear. 20CrMnTi case-hardens well and is the common choice for a holder that will see tool changes all day. |
| Case hardness | 58–60 HRC is normal. A holder that will not hold hardness dents at the taper and loses concentricity within a year. |
| Clamping nut | A plain nut and a bearing (roller) nut are different products at different prices. A bearing nut is worth it if operators tighten by feel rather than with a torque wrench. |
| Gauge length and body diameter | Longer and slimmer holders are less rigid and are ground more carefully. Price follows rigidity. |
The one that catches people out: you can pay for AT2 taper accuracy and 0.003 mm runout on a holder that goes into a spindle with 0.01 mm of its own runout, and gain nothing at all. Before you specify a high-precision holder, measure the spindle. If the machine is the limit, spend the difference on more holders so every job has its own — that will buy you more accuracy in practice than 0.002 mm on one holder will.
If you send only three of those ten, send the spindle interface, the gauge length and the runout tolerance. Those three decide whether the holder is even usable on your machine, and they are the three most often left out of an email that just says “BT40 ER32 holder, best price”.
Most holder families are also where counterfeit and mislabelled product is most common in this market — the part is largely plain steel and easy to copy. We verify the taper with a gauge, check case hardness, and measure runout on a presetter before a batch is accepted.
We will quote holders at the accuracy class your spindle can actually use, and measure taper, hardness and runout on the delivered batch rather than trusting the label.