What the maker published about the Makino J4M
Makino's page for the J4M lists X at 19.7", Y at 22.0" and Z at 19.7". The page lists Pallet at 15.7" x 15.7", Maximum Workpiece at ø28.0" x ø34.6" and Maximum Payload at 880 lb. Spindle RPM is listed at 16,000 RPM, Rapid Traverse at 2,362 in/min and Cutting Feedrate at 1,969 in/min. ATC Capacity is listed at 15 tools (30 tool option), Tool to Tool at 1.7 sec and Chip to Chip at 3 sec (15 atc). The page gives Maximum Tool Length at 12.2", Maximum Tool Diameter at 4.3" / 4.9" with limitations and Maximum Tool Weight at 17.6 lb. The machine can be integrated into different automation concepts because of the NC axis in the table. The J4M develops the J-series machines already in operation worldwide, and its design saves space and energy.
Source: Makino, an archived copy of the maker's page from 2008, November 6, 2026.
What the Makino J4M is used for
The page says the J4M is intended for transfer lines and for machining aluminum parts such as cylinder heads, crankcases, gearboxes and attaching parts.
Source: Makino, an archived copy of the maker's page from 2008, November 6, 2026.
When the Makino J4M was built
Makino's page for the J4M was captured by the Wayback Machine in April 2008, so the model was in production by 2008.
Source: Makino, an archived copy of the maker's page from 2008, November 6, 2026.
The Makino J4M among machining centers and mills
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