The production capacity installed corresponds to more than 12.000 tons per year of skived and roller burnished / honed tubes.

All the equipment have been designed and built by Stelmi, taking a great advantage of a 25 years long production experience.

Stelmi equipment machines the tube horizontally; the tube turns and the tool translates, carried at one end of the boring bar. Rotation and translation may be varied continuously. Machining the tube horizontally means an easier control of the tube itself from both sides and an easier positioning for long tubes. The machining operation is fully automated.

PROCESS EVALUATION

Compared with honing, skiving and roller burnishing process offers not only a better accuracy but also a better surface quality.
A comparison between standard production samples is shown hereafter; skived and roller burnished material has a lower Ra and Rz and a better bearing factor. The picture displays a 60% Tpi achieved, by honing, at a depth of 1,39 ?m The same Tpi value can be found at a depth of only 0,17 ?m thanks to the skiving and roller burnishing process. The shown differences are very important for the gaskets life; for honed tubes, after 100 working hours the gaskets are already 50% worn out. This is due to the fact that the gaskets operate like a "tool",
working to smooth the small, sharp peaks resulting from the honing operation. This phenomenon is unknown for skived and roller burnished tubes.The superior surface quality offered by the skived and roller burnished tubes is essential when a cylinder operates at high speed. The skived and roller burnished surface is superior also for
very slow displacements, avoiding the "stick-slip" phenomena. Honed surfaces on the opposite require frequent gaskets maintenanaces.

Product Characteristics:

• Dimensional accuracy
• Excellent surface finish
• Multiple grades
• Special shapes

Specifications:

• ASTM A519
• DIN 2391

Grades:

• 1010, 1020, 1026, ST 52, 4130, 4140, 8620

Size Range (indicated in blue):

WT (inch)/ OD (inch)	0.109	0.156	0.188	0.219	0.250	0.313	0.375	0.406	0.438	0.500	0.563	0.625	0.750	1.000
0.500
0.563
0.625
0.750
0.875
1.000
1.500
1.750
2.000
2.500
3.000
4.000
5.000
6.000
7.000
8.000					Product tags hydraulic cylinder tubes , tubes for hydraulic cylinder , hydraulic cylinders tubes Send your message to this supplier Message* Email* Phone or WhatsApp* Name Company Please reply me within 24 hours. Yes! I would like your verified suppliers matching service! Send Now Submission successful! HYDRAULIC CYLINDER TUBES Ask Latest Price Product Detail Place of Origin : CHINA Payment Terms : T/T Contact Supplier Please input your companyname! Active Member 9 Years hongkong Since 2010 Business Type : Manufacturer, Distributor/Wholesaler, Exporter Main Products : Seamless Cold Drawn, Cooler Exchanger Accessory Part, Total Annual : 5000000-8500000 Employee Number : 400~500 Certification Level : Active Member Discover similar products Seamless Hydraulic Steel Tube Contact Now Cold Drawn Bright Annealing Steel Tube Contact Now View More Find Similar Products By Category: Supplier Homepage Products Seamless Cold Drawn MachineU China Products Tools & Hardware Hydraulic Tools Hydraulic Cylinders Contact Supplier Message* Email* Phone or WhatsApp* Name Company Submit Requirement Please reply me within 24 hours. Yes! I would like your verified suppliers matching service! Submitted successfully! Your request message has been successfully sent to the supplier. Please keep in touch and they will contact you as soon as possible. OK