Vertical tube expander 

OMS vertical tube expander is designed for the production of heat exchangers coils. By expanding, the copper tubes are closely fitted with the aluminum fins, so as to realize higher heat exchange efficiency. The machine is easy to operate, of high precision, and reliable. It has the following major characteristics: 

1. Tube expanding, end flaring and flanging are done in one process.

2. Expanding rods can be secured quickly. A protection mechanism prevents damage to the expanding rod. 

3. Highly automated, which reduces labor intensity. 

4. The machine can run for 24 hours each day with sound performance. Its low failure rate allows for mass production. 

5. The design takes ergonomics into consideration. The machine is easy to operate, requiring only low maintenance. The noise level is low. 

6. In the case of failure, the control panel screen will display causes and provide solutions, to enhance efficiency. 

OMS tube expander series, including vertical expander and horizontal expander, basically meet all common tube expanding requirements. Also it is our specialty to customize machines according to customers’ specific production requirements. 

You may click this link in Youtube to see the video of the machine:  http://youtu.be/D0E4hko2zjM

Technical specifications 

No.	Item			Content		Remarks
1	Copper tube O.D. and W.T.			φ7.94*0.4
2	Processing(hairpin) length			Min:300mm          Max:1500mm
3	Pattern type			46*6
4	Hole pitch * Row pitch			25mm*21.65mm
5	Nozzle height (A)			11mm
6	Collar height(B)			1.5mm
7	Flaring length(C)			6mm
8	Base height (L)			16mm
9	Collar angle			60°
10	Bullet diameter			φ7.78mm
11	Flaring diameter(D2)			φ8.16
12	Upper clapboard height(H1)			45mm
13	Down clapboard height(H2)			100mm
14	Upper clapboard pitch( U)			10mm
15	Down clapboard pitch(V)			20mm
16	Max Number of tubes expanded at one time			276
17	Expansion mode			with shrinkage
18	Expansion main power			φ225 oil cylinder
19	Flaring deepth control of two to three times			Servo motor
20	Expansion height control			Servo motor
21	Loading -coil worktable			Rotary table to load the coil
22	Flaring height control of two or three times			Servo motor
23	Flaring power of two to three times			Double oil cylinder
25	Efficiency			expanding 3-5m/min ; retracting: 7-8m/min
26	Electric cabinent cooling			Cabinet air conditioner
27	Compressed air pressure			0.4-0.6Mpa
28	Hydraulic system pressure			7Mpa
29	Locking power of upper collet			Hydraulic system
30	Hydraulic motor power			22KW
31	Cooling mode of hydraulic system			water cooling
32	Overall size			2675mm*2580mm*8059mm
33	Total power			≤25KW
34	Power supply			3Ph/380V/60Hz