Overview
ISO 26622-1:2017 - "Modular taper interface with ball track system - Part 1: Dimensions and designation of shanks" specifies the dimensional requirements, designation rules and key features for tapered shanks used with the modular taper interface and ball track system on machine tools. The standard covers a range of nominal shank sizes (32–100 mm), the flange/groove for automatic tool exchange, and the coolant-sealing O‑ring details (Annex A). It also provides guidance on required clamping force and practical recommendations for use (Annex B).
Key Topics and Requirements
- Dimensions and tolerances
- Detailed dimensional tables and drawings for tapered hollow shanks (nominal sizes 32, 40, 50, 63, 80, 100 mm).
- Geometrical tolerancing referenced to ISO 1101 and general tolerances to ISO 2768-1 and ISO 2768-2.
- Automatic and manual exchange
- Shank flange with a groove to enable automatic tool changers; orientation, balance and tool‑changer hole locations defined.
- Coolant sealing
- Annex A specifies O‑ring groove and recommended O‑ring material (fluorocarbon, 90 durometer) and dimensions for coolant sealing.
- Clamping and torque transmission
- Clamping achieved via locking balls and various mechanisms; torque is transmitted at the shank tail by friction, locking elements and keys.
- Annex B provides recommended minimum and maximum clamping forces by nominal size (kN ranges) and guidance on selecting clamping force for operational loads.
- Designation
- Prescribed designation format (e.g., “Modular taper shank ISO 26622-1 - TS 63”).
Applications and Who Uses It
- Primary users: tooling manufacturers, spindle and machine-tool designers, CNC machine builders, precision engineering shops, and quality/control engineers.
- Typical applications:
- Quick-change tool systems on lathes, drilling machines, milling machines and turn/milling centres.
- Both static and rotating tooling interfaces where repeatable, high‑stiffness connections and coolant sealing are required.
- Benefits:
- Ensures interchangeability and manufacturing consistency across suppliers.
- Supports safe clamping, torque transmission and coolant containment for high-speed and heavy machining operations.
Related Standards
- ISO 1101 - Geometrical product specifications (GPS) - tolerancing of form, orientation, location and run-out.
- ISO 2768‑1 / ISO 2768‑2 - General tolerances for linear/angular dimensions and geometrical tolerances.
By conforming to ISO 26622-1:2017, manufacturers and users of modular taper shanks ensure dimensional compatibility, reliable clamping performance and standardized designation for modular taper interfaces with ball track systems.