# Interfaces

Manufacturing reference articles in Interfaces.

[Manufacturing Wiki](https://planar.so/wiki/index.md)

- [5C collets](https://planar.so/wiki/tooling/interfaces/5c-collets.md): 5C workholding interfaces, nominal bore sizes, stock and closer capacity, pullback behavior, and step and expanding variants.
- [BT30 interface](https://planar.so/wiki/tooling/interfaces/bt30-interface.md): BT30 steep-taper geometry, retention knobs, dual-contact variants, and limits of interface compatibility.
- [BT40 interface](https://planar.so/wiki/tooling/interfaces/bt40-interface.md): BT40 steep-taper geometry, retention knobs, tool-changer and coolant compatibility, dual-contact variants and a worked taper calculation.
- [BT50 interface](https://planar.so/wiki/tooling/interfaces/bt50-interface.md): BT50 taper and flange dimensions, retention-knob and coolant variants, dual contact, and the limits of nominal interface compatibility.
- [CAT40 interface](https://planar.so/wiki/tooling/interfaces/cat40-interface.md): CAT40 steep-taper geometry, retention-knob variants, toolchanger compatibility, dual contact, and the distinction between interface and tool-gripping dimensions.
- [CAT50 interface](https://planar.so/wiki/tooling/interfaces/cat50-interface.md): CAT50 V-flange geometry, retention-knob variants, dual-contact limits, and inch-versus-metric compatibility.
- [ER16 collets](https://planar.so/wiki/tooling/interfaces/er16-collets.md): ER16 body geometry, bore and collapse ranges, accuracy grades, assembly interfaces and an inch-versus-metric gripping example.
- [ER20 collets](https://planar.so/wiki/tooling/interfaces/er20-collets.md): ER20 body dimensions, nominal bores and collapse ranges, accuracy grades, assembly constraints and a half-inch shank example.
- [ER25 collets](https://planar.so/wiki/tooling/interfaces/er25-collets.md): ER25 body dimensions, bore ranges, nut compatibility and product-specific clamping limits.
- [ER32 collets](https://planar.so/wiki/tooling/interfaces/er32-collets.md): ER32 collet dimensions, bore ranges, assembly, and the differences between standard, precision, and sealed variants.
- [ER40 collets](https://planar.so/wiki/tooling/interfaces/er40-collets.md): ER40 dimensions, bore ranges, precision and sealed variants, nut engagement, and a worked inch-shank comparison.
- [Floating tap holders](https://planar.so/wiki/tooling/interfaces/floating-tap-holders.md): Axial, radial and angular compensation in tapping; distinctions from rigid and synchronous holders; and a feed-mismatch calculation.
- [HSK-A100 interface](https://planar.so/wiki/tooling/interfaces/hsk-a100-interface.md): HSK-A100 hollow-taper geometry, face contact, form differences and assembly-specific operating limits.
- [HSK-A63 interface](https://planar.so/wiki/tooling/interfaces/hsk-a63-interface.md): HSK-A63 spindle-side geometry, internal clamping, form differences, coolant connections, and machine-specific operating limits.
- [Hydraulic toolholders](https://planar.so/wiki/tooling/interfaces/hydraulic-toolholders.md): Hydraulic expansion clamping, shank and sleeve compatibility, product-specific runout, and thermal and assembly limits.
- [Milling chucks](https://planar.so/wiki/tooling/interfaces/milling-chucks.md): Mechanical roller milling chucks, direct gripping and reducing sleeves, manufacturer-specific assembly conditions and runout interpretation.
- [Pull studs](https://planar.so/wiki/tooling/interfaces/pull-studs.md): Retention-knob geometry, thread compatibility, installation torque, drawbar force and manufacturer-specific service limits.
- [R8 spindle interface](https://planar.so/wiki/tooling/interfaces/r8-spindle-interface.md): R8 taper, drawbar retention, alignment keyway, collets and adapters, with manufacturer-specific gripping and machine limits.
- [Shrink-fit toolholders](https://planar.so/wiki/tooling/interfaces/shrink-fit-toolholders.md): Thermal interference clamping, shank and heating compatibility, engagement limits, and the distinction between friction grip and pullout protection.
- [Weldon end-mill holders](https://planar.so/wiki/tooling/interfaces/weldon-end-mill-holders.md): Side-lock clamping on Weldon flats, shank and spindle interfaces, product-specific torque and runout, and a wrench-force example.