• MMS Youtube
  • MMS Facebook
  • MMS Linkedin
  • MMS Twitter
8/2/2018 | 1 MINUTE READ

Tongtai Horizontal Machining Center for Mass Production Lines

Originally titled 'Horizontal Machining Center for Mass Production Lines'
Facebook Share Icon LinkedIn Share Icon Twitter Share Icon Share by EMail icon Print Icon

The compact SH-4000P horizontal machining center from Tongtai was developed for mass production lines and enables more space on the shopfloor.


Facebook Share Icon LinkedIn Share Icon Twitter Share Icon Share by EMail icon Print Icon

The new SH-4000P horizontal achining center from Tongtai was developed for mass production lines. Sold and serviced by Absolute Machine Tools Inc., the compact SH-4000P 

has a XY traveling column design where the pallet moves in the Z path. The APC unit, located in front of the machine, is a rotary pallet changer, exchanging pallets in 5.9 seconds. For pallet rotation in the machining envelope, a contouring B axis indexes the pallet every 0.001 degree and a hydraulic mechanism clamps the pallet in place for repeatability. The B axis is high-speed, with 90-degree index time of 0.5 second. 

The SH-4000P features a Meehanite cast iron frame with a three-point leveling system. The LHL/LubeUSA grease lubrication system is standard for ways and ballscrews—no coolant contamination and no waste oil. The 40-mm (1.57”) diameter ballscrews are Class 3 with a double nut pre-loaded and pre-tensioned design, enabling a traverse rate of 2,362 inches per minute. High-speed acceleration reduces non-cut time (XYZ acc/dec of 1.0G). The ABS servo system enables the machine to start anytime from any position. A rear discharge chip removal system includes a center trough with high-volume chip wash for efficient removal. A dual level caterpillar-type conveyor with fines separator is suitable for most chips/material.

At the center of the machine is our integral spindle with 15,000 rpm and spindle acceleration from 0-7,000 in 0.48 second and 0-15,000 in 1.9 seconds. Deceleration from 12,000 rpm to stop is only 0.8 second. Thespindle, which switches windings on the fly, produces 50-hp peak (10 min. rating), 35-hp in high and 25-hp in low while producing 184 foot-pounds of peak torque at 980 rpm.



  • The Challenges of Machining Glass-Filled Plastics

    Plastics reinforced with glass present more machining variables to manage than conventional metals. This shop has developed a process to overcome those challenges and has become more adroit at short-run work along the way.

  • Dispelling Small Machine Shop Myths

    Many job shops start in a garage with a used mill and a manual lathe. The owners of this Utah job shop took a different tack. Along the way to a very successful business, they've debunked a bunch of myths commonly held about job shops.

  • When Spindle Speed is a Constraint

    Though it won’t replace high speed machining, Boeing sees “low speed machining” as a viable supplement to higher-rpm machines. Using new tools and techniques, a shop’s lower-rpm machining centers can realize much more of their potential productivity in milling aluminum aircraft parts.