This series of deep-hole drilling and boring machines is a specialized machine tool for machining cylindrical deep-hole parts, suitable for drilling, boring, and roll-pressing operations on such workpieces. During drilling, an internal chip-removal system (BTA method) is employed: lubricant is delivered via the nozzle into the cutting zone, carrying the chips through the interior of the drill rod to the chip-collection hopper at the rear of the machine bed. For boring and roll-pressing, lubricant is supplied through the nozzle into the cutting zone and discharged forward to remove metal chips. When performing combined boring and roll-pressing operations, either conventional boring-and-roll-pressing tools or high-efficiency, automatically expanding-and-contracting combined scraping-and-polishing tools can be used, enabling high-speed, high-efficiency machining of hydraulic cylinders.
The bed guideways of this series of deep-hole drilling and boring machines are double-rectangular guideways that have undergone quenching treatment, providing excellent wear resistance. Protective guards are installed at the center and on the outer sides of the bed guideways, ensuring superior aesthetic protection and preventing oil leakage. The feed and tool-holding unit movements are driven by servo motors, with gear–rack or ball-screw drives, offering high rigidity and convenient control. The feed system employs AC servo motors to ensure the safety of the machine tool, cutting tools, and workpieces. The main spindle motor is a variable-frequency drive motor with stepless speed regulation, enhancing adaptability.

	T2225G TK2225G	T2125G/1 TK2125G/1
Drilling diameter range		Φ30–Φ100mm
Boring diameter range	Φ40–Φ250 mm	Φ40–Φ250 mm
Boring depth range	1000-12000mm	1000-12000mm
Clamping workpiece diameter range	Φ60–Φ350mm	Φ60–Φ350mm
Machine tool spindle center height	400mm	400mm
Bedside box spindle speed range	60–1000 r/min (12 levels)	60–1000 r/min (12 levels)
Bedside table spindle bore diameter	Φ75mm	Φ75mm
Spindle front taper bore	Φ85mm (1:20)	Φ85mm (1:20)
Bedside table motor power	30KW	30KW
Drill pipe box motor power		22/30kw
Drill pipe box spindle bore diameter		Φ75mm
Tapered hole at the front end of the drill pipe box		Φ85mm (1:20)
Drill pipe box speed range		40–670 r/min (12 levels)
Feed rate range (stepless)	5–2000 mm/min (stepless)	5–2000 mm/min (stepless)
Rapid traverse rate of the feed carriage	2m/min	2m/min
Feed motor power	36N.M	36N.M
Drag plate rapid motor power	3KW	3KW
Hydraulic pump motor power	1.5KW	1.5KW
Rated working pressure of the hydraulic system	6.3Mpa	6.3Mpa
Cooling pump motor power	5.5 kW (4 sets)	5.5 kW (4 sets)
Cooling system rated pressure	0.36Mpa	2.5Mpa
Cooling system flow	100, 200, 300, 400 L/min	100, 200, 300, 400 L/min
The fuel dispenser withstands the maximum axial force.	6.3KN	6.3KN
Maximum clamping force of the oil applicator on the workpiece	20KN	20KN
CNC system	Siemens 808 or KND CNC system