SK-U Series Two Platen Injection Molding Machine

SK-U Two-plate Injection Molding Machine: Remolding the Future of Manufacturing, the Perfect Fusion of Efficiency and Precision

In the modern manufacturing industry’s pursuit of ultimate efficiency and quality, the SK-U two-platen injection molding machine stands out with its unique advantages, becoming the preferred tool for transformation and upgrading in many industries.

The SK-U series two-platen injection molding machine is designed with a high-rigidity mold clamping unit, precision guidance system, synchronous braking mechanism, rapid pressure cylinders, and an instantaneous response control system. It integrates the control of high-response dual proportional valves to achieve enhanced operational efficiency and stable control performance.

🌟 Anti-Shock Synchronous Holding Brake Mechanism
A buffered synchronous holding brake mechanism ensures rapid and reliable clamping without impact or shock.
🌟 Independent High-Pressure Oil Cylinder Design
This design enables slow, high-pressure mold opening. It also accommodates installation in low-headroom facilities by allowing the extraction of guide pillars to fit upper and lower molds.
🌟 High-Rigidity Precision Guide System
The system features an L-shaped guide rail on a high-rigidity frame, providing precise guidance with an accuracy of ±0.05mm. This creates the ideal conditions for the stable and rapid movement of the mold platen.
🌟 Wear-Resistant & Corrosion-Resistant Guide Post with Uniform Stress Distribution
SK-U Guide posts are treated with a special process to enhance their rigidity, wear resistance, and corrosion resistance. They achieve over 99% force uniformity, preventing eccentric loading and ensuring long-term durability.

Design Features

➢ Reinforced Platen Structure:
Enhances mold-closing stability and extends machine service life.
➢ Larger Mold Opening Stroke
Compared to conventional three-plate machines, accommodates deeper cavity molds while reducing equipment investment for customers.
➢ Unique Three-Rod Single-Cylinder Brake System
Ensures precise synchronization during mold opening and closing at all times.
➢ Simple & Reliable Movable Platen & Holding Brake Design
Improves operational reliability and maintenance convenience.
➢ Superior Perpendicularity & Parallelism
High-precision construction minimizes cumulative errors, increasing product accuracy and yield rate.
➢ Automatic Mold Adjustment
Once parameters are set via computer, the system delivers simple, fast, automatic, and highly accurate mold setup.

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Exceptional Precision in Mold Opening Position

Achieves a repeatable mold opening accuracy of ±0.2mm—a fivefold improvement over standard three-plate machines. (Verified by internal 1200-ton testing).

Ultra-Sensitive Mold Protection

SK-U series machines’ intelligent deceleration control provides unparalleled sensitivity, achieving the "A4 paper rebound" standard. It can stop on the slightest obstruction, ensuring your valuable molds are protected with maximum reliability.

High-Speed Performance, Lower Cycle Times

Experience significantly faster dry cycles. Our optimized system delivers rapid mold opening and clamping, translating directly into enhanced productivity and greater output. (Verified by 1200-ton internal testing).

Deliver to Global Customers

SK-680U

SK-780U

SK-900U

SK-1080U

SK-1200U

SK-1400U

SK-1600U

SK-1800U

SK-2000U

SK-2400U

SK-2800U

SK-3300U

MODEL			SK-680U
Description	Item	Unit	A	B	C
INJECTION UNIT	Screw Diameter	MM	85	90	95
	Screw L/D Ratio	L/D	22.3	19.7	18.6
	Shot Size (Theoretical)	CM³	2327	2609	2907
	Injection Weight (PS)	G	2118	2374	2645
	Injection Rate	G/S	543	608	678
	Plasticizing Capacity	G/S	63	74	88
	Injection Pressure	MPA	163	146	131
	Screw Speed	RPM	0 - 150
CLAMPING UNIT	Clamp Tonnage	KN	6800
	Space Between Tie Bars	MM	960×900
	Opening Stroke	MM	1800/1200
	Max. Mold Height	MM	1000
	Min. Mold Height	MM	400
	Max.daylight	MM	2200
	Ejector Stroke	MM	300
	Ejector Tonnage	KN	150
	Ejector Number	PCS	17
OTHERS	Max.・Pump Pressure	MPA	17.5/21
	Pump Motor Power	KW	31+42+13
	Heater Power	KW	34.8
	Machine Dimension (LxWxH)	M	8.6×2.6×2.5
	Machine Weight	T	25
	Oil Tank Capacity	L	950

MODEL			SK-780U
Description	Item	Unit	A	B	C
INJECTION UNIT	Screw Diameter	MM	95	100	105
	Screw L/D Ratio	L/D	21.2	20.1	19.1
	Shot Size (Theoretical)	CM³	2977	3300	3636
	Injection Weight (PS)	G	2709	3003	3309
	Injection Rate	G/S	562	623	686
	Plasticizing Capacity	G/S	72	85	95
	Injection Pressure	MPA	158	143	130
	Screw Speed	RPM	0 - 130
CLAMPING UNIT	Clamp Tonnage	KN	7800
	Space Between Tie Bars	MM	1070×940
	Opening Stroke	MM	1700/1000
	Max. Mold Height	MM	1100
	Min. Mold Height	MM	400
	Max.daylight	MM	2100
	Ejector Stroke	MM	300
	Ejector Tonnage	KN	150
	Ejector Number	PCS	17
OTHERS	Max.・Pump Pressure	MPA	17.5/21
	Pump Motor Power	KW	48+48+13
	Heater Power	KW	46.45
	Machine Dimension (LxWxH)	M	8.5×2.7×2.5
	Machine Weight	T	30
	Oil Tank Capacity	L	1000

MODEL			SK-900U
Description	Item	Unit	A	B	C
INJECTION UNIT	Screw Diameter	MM	100	105	115
	Screw L/D Ratio	L/D	23	21.9	20
	Shot Size (Theoretical)	CM³	4082	4500	5398
	Injection Weight (PS)	G	3715	4095	4912
	Injection Rate	G/S	629	694	832
	Plasticizing Capacity	G/S	85	94	113
	Injection Pressure	MPA	201	182	152
	Screw Speed	RPM	0 - 110
CLAMPING UNIT	Clamp Tonnage	KN	9000
	Space Between Tie Bars	MM	1100×970
	Opening Stroke	MM	1650/1000
	Max. Mold Height	MM	1100
	Min. Mold Height	MM	450
	Max.daylight	MM	2100
	Ejector Stroke	MM	300
	Ejector Tonnage	KN	210
	Ejector Number	PCS	17
OTHERS	Max.・Pump Pressure	MPA	17.5/21
	Pump Motor Power	KW	60 + 48 + 13
	Heater Power	KW	58.45
	Machine Dimension (LxWxH)	M	9.3×3.2×2.7
	Machine Weight	T	40
	Oil Tank Capacity	L	1100

MODEL			SK-1080U
Description	Item	Unit	A	B	C
INJECTION UNIT	Screw Diameter	MM	100	110	120
	Screw L/D Ratio	L/D	24.2	22	20.2
	Shot Size (Theoretical)	CM³	4006	4847	5768
	Injection Weight (PS)	G	3645	4410	5249
	Injection Rate	G/S	672	813	968
	Plasticizing Capacity	G/S	101	121	140
	Injection Pressure	MPA	211	174	146
	Screw Speed	RPM	0 - 120
CLAMPING UNIT	Clamp Tonnage	KN	10800
	Space Between Tie Bars	MM	1200×1050
	Opening Stroke	MM	1800/1100
	Max. Mold Height	MM	1200
	Min. Mold Height	MM	500
	Max.daylight	MM	2300
	Ejector Stroke	MM	350
	Ejector Tonnage	KN	280
	Ejector Number	PCS	17
OTHERS	Max.・Pump Pressure	MPA	17.5/21
	Pump Motor Power	KW	60 + 60 + 13
	Heater Power	KW	68.45
	Machine Dimension (LxWxH)	M	9.6×3.4×3.2
	Machine Weight	T	46
	Oil Tank Capacity	L	1250

MODEL			SK-1200U
Description	Item	Unit	A	B	C
INJECTION UNIT	Screw Diameter	MM	110	120	130
	Screw L/D Ratio	L/D	24	22	20.3
	Shot Size (Theoretical)	CM³	5224	6600	7746
	Injection Weight (PS)	G	5046	6006	7049
	Injection Rate	G/S	813	968	1136
	Plasticizing Capacity	G/S	121	140	161
	Injection Pressure	MPA	205	172	147
	Screw Speed	RPM	0 - 110
CLAMPING UNIT	Clamp Tonnage	KN	12000
	Space Between Tie Bars	MM	1300×1100
	Opening Stroke	MM	1900/1200
	Max. Mold Height	MM	1300
	Min. Mold Height	MM	600
	Max.daylight	MM	2500
	Ejector Stroke	MM	350
	Ejector Tonnage	KN	280
	Ejector Number	PCS	25
OTHERS	Max.・Pump Pressure	MPA	17.5/21
	Pump Motor Power	KW	48 + 48 + 48 + 13
	Heater Power	KW	74.35
	Machine Dimension (LxWxH)	M	11.5×3.7×3.6
	Machine Weight	T	58
	Oil Tank Capacity	L	1500

MODEL			SK-1400U
Description	Item	Unit	A	B	C
INJECTION UNIT	Screw Diameter	MM	120	130	140
	Screw L/D Ratio	L/D	24	22.2	20.6
	Shot Size (Theoretical)	CM³	7307	8575	9945
	Injection Weight (PS)	G	6605	7804	9050
	Injection Rate	G/S	1061	1245	1443
	Plasticizing Capacity	G/S	138	159	182
	Injection Pressure	MPA	172	147	127
	Screw Speed	RPM	0 - 105
CLAMPING UNIT	Clamp Tonnage	KN	14000
	Space Between Tie Bars	MM	1400×1280
	Opening Stroke	MM	2250/1400
	Max. Mold Height	MM	1500
	Min. Mold Height	MM	650
	Max.daylight	MM	2900
	Ejector Stroke	MM	350
	Ejector Tonnage	KN	280
	Ejector Number	PCS	25
OTHERS	Max.・Pump Pressure	MPA	17.5/21
	Pump Motor Power	KW	60 + 48 + 48 + 13
	Heater Power	KW	84.1
	Machine Dimension (LxWxH)	M	12.9×3.8×3.8
	Machine Weight	T	70
	Oil Tank Capacity	L	1700

MODEL			SK-1600U
Description	Item	Unit	A	B	C
INJECTION UNIT	Screw Diameter	MM	130	140	150
	Screw L/D Ratio	L/D	22	20.4	19
	Shot Size (Theoretical)	CM³	8369	9590	11009
	Injection Weight (PS)	G	7524	8727	10018
	Injection Rate	G/S	1208	1401	1609
	Plasticizing Capacity	G/S	139	151	165
	Injection Pressure	MPA	163	142	123
	Screw Speed	RPM	0 - 100
CLAMPING UNIT	Clamp Tonnage	KN	16000
	Space Between Tie Bars	MM	1460×1360
	Opening Stroke	MM	2400/1400
	Max. Mold Height	MM	1700
	Min. Mold Height	MM	700
	Max.daylight	MM	3100
	Ejector Stroke	MM	400
	Ejector Tonnage	KN	360
	Ejector Number	PCS	25
OTHERS	Max.・Pump Pressure	MPA	17.5/21
	Pump Motor Power	KW	60 + 60 + 48 + 13
	Heater Power	KW	95.05
	Machine Dimension (LxWxH)	M	13×4.0×4.0
	Machine Weight	T	83
	Oil Tank Capacity	L	2200

MODEL			SK-1800U
Description	Item	Unit	A	B	C
INJECTION UNIT	Screw Diameter	MM	130	140	150
	Screw L/D Ratio	L/D	22	20.4	19
	Shot Size (Theoretical)	CM³	8369	9590	11009
	(Injection Weight (PS)	G	7524	8727	10018
	Injection Rate	G/S	1293	1499	1721
	Plasticizing Capacity	G/S	139	151	165
	Injection Pressure	MPA	163	142	123
	Screw Speed	RPM	0 - 100
CLAMPING UNIT	Clamp Tonnage	KN	18000
	Space Between Tie Bars	MM	1580×1480
	Opening Stroke	MM	2900/1800
	Max. Mold Height	MM	1800
	Min. Mold Height	MM	700
	Max.daylight	MM	3600
	Ejector Stroke	MM	400
	Ejector Tonnage	KN	360
	Ejector Number	PCS	25
OTHERS	Max.・Pump Pressure	MPA	17.5/21
	Pump Motor Power	KW	60 + 60 + 60 + 13
	Heater Power	KW	95.05
	Machine Dimension (LxWxH)	M	13.4×4.1×4.2
	Machine Weight	T	100
	Oil Tank Capacity	L	2200

MODEL			SK-2000U
Description	Item	Unit	A	B	C
INJECTION UNIT	Screw Diameter	MM	140	150	160
	Screw L/D Ratio	L/D	24	22.4	21
	Shot Size (Theoretical)	CM³	10462	12010	13665
	Injection Weight (PS)	G	9520	10929	12435
	Injection Rate	G/S	1401	1609	1830
	Plasticizing Capacity	G/S	132	162	196
	Injection Pressure	MPA	168	146	129
	Screw Speed	RPM	0 - 85
CLAMPING UNIT	Clamp Tonnage	KN	20000
	Space Between Tie Bars	MM	1650×1550
	Opening Stroke	MM	2750/1650
	Max. Mold Height	MM	1850
	Min. Mold Height	MM	750
	Max.daylight	MM	3500
	Ejector Stroke	MM	450
	Ejector Tonnage	KN	400
	Ejector Number	PCS	25
OTHERS	Max.・Pump Pressure	MPA	17.5/21
	Pump Motor Power	KW	60 + 60 + 60 + 19 + 13
	Heater Power	KW	110.7
	Machine Dimension (LxWxH)	M	13.6×4.3×5.0
	Machine Weight	T	112
	Oil Tank Capacity	L	2400

MODEL			SK-2400U
Description	Item	Unit	A	B	C
INJECTION UNIT）	Screw Diameter	MM	160	170	180
	Screw L/D Ratio	L/D	22.3	21	19.8
	Shot Size (Theoretical)	CM³	19463	21972	24633
	Injection Weight (PS)	G	17712	19995	22417
	Injection Rate	G/S	1354	1529	1714
	Plasticizing Capacity	G/S	160	192	228
	Injection Pressure	MPA	184	163	146
	Screw Speed	RPM	0 - 60
CLAMPING UNIT	Clamp Tonnage	KN	24000
	Space Between Tie Bars	MM	1840×1640
	Opening Stroke	MM	2900/1800
	Max. Mold Height	MM	1900
	Min. Mold Height	MM	800
	Max.daylight	MM	3700
	Ejector Stroke	MM	450
	Ejector Tonnage	KN	400
	Ejector Number	PCS	25
OTHERS	Max.・Pump Pressure	MPA	17.5/21
	Pump Motor Power	KW	60 + 60 + 60 + 27 + 21
	Heater Power	KW	140
	Machine Dimension (LxWxH)	M	15.2×4.5×5.2
	Machine Weight	T	148
	Oil Tank Capacity	L	3200

MODEL			SK-2800U
Description	Item	Unit	A	B	C
INJECTION UNIT	Screw Diameter	MM	190	200	210
	Screw L/D Ratio	L/D	23.2	22	21
	Shot Size (Theoretical)	CM³	31756	35186	38793
	Injection Weight (PS)	G	28898	32020	35302
	Injection Rate	G/S	1781	1973	2175
	Plasticizing Capacity	G/S	182	212	243
	Injection Pressure	MPA	152	137	125
	Screw Speed	RPM	0 - 50
CLAMPING UNIT	Clamp Tonnage	KN	28000
	Space Between Tie Bars	MM	1900×1700
	Opening Stroke	MM	3050/1900
	Max. Mold Height	MM	2000
	Min. Mold Height	MM	850
	Max.daylight	MM	3900
	Ejector Stroke	MM	450
	Ejector Tonnage	KN	400
	Ejector Number	PCS	25
OTHERS	Max.・Pump Pressure	MPA	17.5/21
	Pump Motor Power	KW	60 + 60 + 60 + 42 + 21
	Heater Power	KW	187.6
	Machine Dimension (LxWxH)	M	16.6×4.9×5.3
	Machine Weight	T	186
	Oil Tank Capacity	L	3500

MODEL			SK-3300U
Description	Item	Unit	A	B	C
INJECTION UNIT	Screw Diameter	MM	200	210	220
	Screw L/D Ratio	L/D	22	21	20
	Shot Size (Theoretical)	CM³	36914	40698	44666
	Injection Weight (PS)	G	33592	37036	40647
	Injection Rate	G/S	1830	2018	2214
	Plasticizing Capacity	G/S	212	243	265
	Injection Pressure	MPA	210	142	129
	Screw Speed	RPM	0 - 50
CLAMPING UNIT	Clamp Tonnage	KN	33000
	Space Between Tie Bars	MM	2200×1900
	Opening Stroke	MM	3200/2100
	Max. Mold Height	MM	2100
	Min. Mold Height	MM	1000
	Max.daylight	MM	4200
	Ejector Stroke	MM	500
	Ejector Tonnage	KN	500
	Ejector Number	PCS	33
OTHERS	Max.・Pump Pressure	MPA	17.5/21
	Pump Motor Power	KW	60 + 60 + 60 + 60 + 21
	Heater Power	KW	187.6
	Machine Dimension (LxWxH)	M	19.3×4.9×5.5
	Machine Weight	T	198
	Oil Tank Capacity	L	3900