Exact Diameter Adaptation
Reduces a 3/4 in holder bore to a 1/2 in tool shank using the verified D2 and D1 dimensions.


ETP HS hydraulic reduction sleeve for CNC woodworking, reducing a 3/4 in holder diameter to a 1/2 in tool shank, with internal-cooling design and verified inch-to-inch geometry.
ETP HS hydraulic reduction sleeve with 3/4 in holder diameter, 1/2 in tool diameter, and internal-cooling configuration.
For compatible ETP hydraulic toolholding arrangements accepting a 3/4 in (19.05 mm) reduction sleeve body and a 1/2 in (12.7 mm) cylindrical tool shank.
ETP Transmission R1919.12702 is an HS inch-to-inch reduction sleeve for CNC woodworking. The verified ETP geometry reduces holder diameter D2 19.05 mm (3/4 in) to tool diameter D1 12.7 mm (1/2 in), with outside diameter D3 25 mm.
The exact sleeve dimensions are L1 50 mm, L2 45 mm, and L3 4 mm. These dimensions identify the submitted sleeve variant and must not be borrowed from adjacent HS sleeve rows.
ETP specifies this sleeve as an inch-to-inch reduction sleeve for internal cooling. It is used to adapt a smaller cylindrical tool shank to a compatible hydraulic toolholding bore while retaining the ETP sleeve interface.


Technical Specifications
Reduces a 3/4 in holder bore to a 1/2 in tool shank using the verified D2 and D1 dimensions.
ETP specifies this HS sleeve configuration for internal cooling.
Exact L1/L2/L3 dimensions are 50 / 45 / 4 mm for SKU R1919.12702.
Confirm the receiving hydraulic holder accepts the verified 3/4 in (19.05 mm) sleeve diameter and that the tool shank is 1/2 in (12.7 mm). Maintain the ETP-specified internal-cooling arrangement and do not substitute adjacent HS sleeve sizes with similar outside dimensions.
ETP Transmission R1919.12702 provides a verified 3/4 in-to-1/2 in inch-to-inch reduction in the HS sleeve format, with D3 25 mm and L1 50 mm.
Exact SKU selection is critical because ETP publishes multiple HS body sizes and tool diameters with closely related part-number patterns but different dimensional rows.