Design a toolholder
Set out a toolholder on its interface, change its length, nose, bore, coolant or balance and see it checked and priced.
Updated 11 November 2026
On this page
- Why
- A special holder is a catalogue holder with its gauge length, nose, bore, coolant or balance changed. Every change has to suit the interface.
- How
- Choose the holder, then the machine side, then the clamping side. Change only what makes it a special.
It opens in the workbench at /app/design/toolholders.
Families
| Family | What it is |
|---|---|
| Shrink fit chuck | Clamps a plain shank by shrinking. The standard dimensions come from the catalogue row for the bore. |
| ER collet chuck | Clamps through an ER collet and nut. The collet is ordered separately. |
| Hydraulic chuck | Clamps by hydraulic expansion. It is always built as entered, because no catalogue row is held. |
| Side lock holder (Weldon or whistle notch) | Clamps a flatted shank with screws. The clamping bore length is always entered. |
| Face mill arbor | Carries a shell mill on a pilot, which must equal the cutter bore. |
What you set
| Group | What it holds | Values you set |
|---|---|---|
| Holder | Holder | |
| Machine side | The interface the spindle takes. | Interface; HSK form; HSK size; BT size; CAT size; Taper accuracy; 2 more |
| Clamping side | Clamping diameter D1; Clamping bore tolerance; Collet size; Clamping nut; Collet class; Adjusting screw; 6 more | |
| Length and nose | Where a catalogue holder becomes a special. | Gauge length; Gauge length A; Nose contour; Nose diameter D2; Body diameter D3; Nose taper, per side; 3 more |
| Coolant | Coolant form; Coolant tube; Peripheral coolant bores; Coolant bores or slits; Coolant; Coolant pressure; 1 more | |
| Balance | Balance; Threaded holes for balancing screws; Spindle speed | |
| The tool it holds | Optional. Lets the checks read the shank, the runout and the overhang. | Tool shank form; Tool shank tolerance; Tool shank material; Tool shank diameter; Tool cutting diameter; Tool stick out |
| Steel, finish and quantity | Body steel; Surface finish; Certificate of quality; Quantity |
- The machine side is HSK (DIN 69893), BT (JIS B 6339) and CAT (ASME B5.50). The machine fixes it, so it is never assumed.
- Gauge length and Nose contour are each Standard for the size or Special. Standard takes the dimensions from the catalogue row. Special opens them for you to enter.
- The tool it holds is optional. A number left at 0 is not stated and its check stays off.
- The catalogue rows are one maker's programme on one interface. On another interface the row is the starting point and the cutting list says so.
What is checked
The checks read the HAIMER tool holder catalogue, the REGO-FIX ER System catalogue and the published HSK size tables. A block stops the price and every export. A warning changes nothing.
| Check | Result |
|---|---|
| An HSK form and size the published tables do not hold | Blocks |
| A clamping bore the family is not listed with | Blocks |
| A nut the collet size is not listed with | Blocks |
| A standard gauge length where the catalogue holds none for the collet size | Blocks |
| A tool shank that is not h6 in a shrink fit or hydraulic chuck | Blocks |
| An HSS shank in a slim shrink nose | Blocks |
| A tool shank outside the clamping range of the collet size | Blocks |
| A coolant form that does not match the pull stud | Blocks |
| Pull out protection on a bore smaller than it is offered for | Blocks |
| A gauge length that does not clear the flange and, on a collet chuck, the nut | Blocks |
| A nose no larger than the bore, a body smaller than the nose or a bore as long as the holder | Blocks |
| A shank form that does not suit the holder, such as a plain shank in a side lock holder | Warns |
| Published runout that is high for the tool diameter | Warns |
| A tool that sticks out far for its diameter | Warns |
| A speed above the speed the balance grade is stated at | Warns |
| Coolant pressure above what the sealing parts are published for | Warns |
| A body that stands over the gripper clearance in front of the flange | Warns |
| A coolant tube where no thread is published | Warns |
How it is priced
| Price line | What it counts |
|---|---|
| Material | The steel bar on the largest diameter and the full length, plus the parts bought in. |
| Complexity | The counted manufacturing steps of every holder in the order, plus one set up for the batch. |
| Quality | Taper, gauge and runout check, the balance report, marking and any certificate, for every holder in the order. |
| Coating | Surface finish of the body. |
The steel bar is matched from your own stock by steel and diameter. With no bar that fits, the steel rate prices it.
The rates this design module ships with are examples, not your prices. Set your own at /app/design/toolholders/settings before you quote from it.
What it produces
- Customer drawing
- Axial section DXF
- Cutting list with the designation
- Spec sheet
- STEP, STL and GLB
Exports offers a customer drawing, a specification and quote PDF, a cutting list CSV, a DXF, an STL, a GLB and a STEP file.
What it does not make yet
The workbench and the specification sheet state its scope in these words: "Sets out and prices a holder from published interface and catalogue dimensions. It does not decide the interface your spindle takes, the pull stud standard for your draw bar, the clamping bore tolerance or interference, the hydraulic chamber, a speed limit or the balance of the assembled tool: the maker confirms those. Features marked as drawn to proportion are not specifications."
- Interfaces: SK steep tapers, HSK-T, polygon shanks, VDI, BMT and Morse taper as the machine side. A dimension each needs was not published in the sources read.
- Families: milling chucks, Morse taper adapters, tapping chucks, drill chucks, extensions, reduction sleeves, collets, pull studs as a product, blank adapters and turret holders.
- Versions: the slim, mini, power and heavy duty shrink contours are not held as rows. Build one as a special nose from the request's own dimensions.
- Cutting data: it states no speeds or feeds.