Sunbun, Your best high speed high precision injection molding machine.

SK series. From 140T-2800T as the lastest generation injection molding machine of SUNBUN group featuring the mechanical Central Locking Structure. Different with 99.9% injection machine among the market

With 100% clamping force and longer open stroke which can be use smaller machine make bigger products. Material saving 2%-6% than normal machine enjoy solid reputation from all the clients.

China Sunbun Sk1800 is Central Locking Techology High Speed High Precision Plastic Horizontal Injection Molding Machine.

It Enjoy 100% Clamping force Which Can With Smaller Machine Making Bigger Product.

From 140T-2800T

sk 1800t servo motor injection molding machine

● 100% Clamping Force Ratio, 10%-20% Higher Than Tradtional One

● Less Fins On The Finished Products

● 2%-6% Raw Material Saved From Tradtional One

● Effective Production For Mold, Mold Board and Pull Rod

●Open Stroke 10%-20% Bigger Than Morlam One

● Less Deformation By CoolIng

Injection part

Item/type	Unit	SK2500 / C40700				SK2800 / C70000
Screw type		A	B	C	D	A	B	C	D
Screw diameter	mm	170	185	200	220	200	220	230	240
Screw diame-ter ratio	L/D	24	22	20	19	24	22	21	20
Theoretical injection volume	cm³	20996	24864	29060	35162	36285	43905	47987	52251
Injection volume (PVC)	g	19106	22626	26445	31997	33019	39954	43668	47548
Maximum rate for inject-ion to air	cm³/s	1443	1709	1997	2416	1816	2197	2042	2615
Injection pressure	MPa	194	164	144	116	193	160	146	134
Injection stroke	mm	925				1155
Maximum injection speed	mm/s	63.5				57.8
Maximal Rotational Speed of Screw	r/min	48				54

Clamping part

Item/type	Unit	SK2500 / C40700	SK2800 / C70000
Clamp Tonnage	KN	25000	28000
Toggle stroke	mm	2250	2400
Distance between tie bars	mm×mm	1920x1720	2110x1910
Maximum mould height	mm	2000	2100
Minimum mould height	mm	850	950
Ejection stroke	mm	500	550
Ejector force forward	KN	425	425
Ejector force backard	KN	334	334
Amount of die thimble	Pcs	1+28	1+28

Others

Item/type	Unit	SK2500 / C40700	SK2800 / C70000
System pressure	MPa	16	16
Motor power	KW	47+47+47+47	77+47+47+47+47
Heater power	KW	165.3	225.9
Quantity of temperature-control zones		1+6	1+6
Bucket capacity	kg	400	400
Oil tank capacity	L	2700	3000
Boundary dimension(L×W×H)	m	18.5 x 4.15 x 5.1	20.5x4.45x5.6
Machine weight	Ton	170	230
Side dimension of the molding board

INJECTION SYSTEM

The enhanced double-cylinder dual-extruding enjection structure will produce a lower back pressure in oil return during ejection. have a quicker injection speed and longer service life
The dual linear-guide , double displacement balanced stand can improve machine barrel accuracy
Precise screw design will dramatically improve the injection accuracy and effectively reduce the defective rate. (38/42 Crmoal)
The optioncal pneumatic nozzle imported with orginal package has a flexible switch device and reliable seal
The cylinder with thicker wall and a high power heater can ensure a high plasticizing efficiency

sk 140t servo motor injection molding machine

HYDRAULIC SYSTEM

With international High Speed Storage motor and Hydraulic Components ensure fast , effcient and long life operation
Modualr design for High-Response oil circult and hydraulic valve plate Which have a large oil circule and free of damp effectively reduce pressure loss , speed up system response ability
Original germany oil pipe and seals avoid oil leak.

sk 140t servo motor injection molding machine

ELECTRONIC CONTROL

The whole electrionic control system is design for full electric and high speed injection molding machine
Apply Up-To-Date System, New hardware design, intelligent interactive interface , A CPU for fast arithmetic speed
Using EtherCAT/CAN All-Date Communication technology Show clear iprovement in all technical indexes. Actsmore accurately in pressure and flow rate control
Reserves an internet management systen and energy consumpition display which enables advantanced control modes.

sk 140t servo motor injection molding machine

CLAMPING SYSTEM

SK Series adopts outwards toggle and excellent design ideal . with quite large bar space between four column. Which is required by different industries.
Super large open stroke is 10%-20% bigger than normal one. More suitable for deep cavity product
QT500-7 Mold board is much strong for long time service .
Adopting gear-adjusting ring with high-precision, large-scale transfer and compact structure to facilitate customer adjusting the mold thickness

sk 140t servo motor injection molding machine