FT 2870-45 RI HP ContiTech Industrial Triple Convoluted Air Spring GUOMAT 3B6984
Industrial Triple Convoluted Air Spring Specifications
execution
Article no.
Only rubber bellows
61978
Bellows with steel bead rings RI11014
68027
Technical specifications:
Minimum pressure 0 bar
Maximum pressure 12 bar
Restoring force to minimum height * 2000 N
Total weight 36.5 kg
A Minimum height * 125 mm
B Stroke max. (Maximum recommended) * 445 (355) mm
C1 diameter max. * 720 mm
C2 Required installation space 770 mm
D Mounting hole circle 597.5 mm
E1 sealing and mounting surface inside 542 mm
E2 sealing and mounting surface outside 587 mm
F thread depth 14 mm
G mounting thread M10
| Manufacturer Part Number | FT 2870-45 RI HP FT2870-45RIHP FT2870-45 RI HP | Bead ring Type | 4 |
| Maximum Diameter @ 7 Bar (mm) | 709 | Dim# C (Bolt Circle Diameter mm) | 597 |
| Maximum Height (mm) | 114 | # of Bolts (each ring) | 32 |
| Maximum Stroke (mm) | 361 | Design Height (mm) | 381 |
| Minimum Usable Height (mm) | 475 | 3 Bar (kN) | 78.5 |
| 25 mm (kN) | 174.6 | 5 Bar (kN) | 132.9 |
| 50% of Max Stroke (kN) | 150 | 7 Bar (kN) | 187.9 |
| Maximum Stroke (kN) | 106.5 | Natural Frequency (@5 Bar)(fn(Hz) | 1.2 |
| Applicable Technigram? | 113 | 7 Hz | 97 |
| Material | 2-Ply, High Strength Cord | 13 Hz | 99.3 |
| | | 25 Hz | 99.8 |
| Assembly Height (mm) | | 440 | 400 | 360 | 320 | 280 | 240 | 200 | 160 |
| Volume @ 7 BAR (cu cm) | | 135784 | 125615 | 114722 | 102796 | 90465 | 77839 | 64589 | 50778 |
| EFF Area @ 7 BAR (cm sq) | | 2394 | 2596 | 2757 | 2897 | 3026 | 3151 | 3277 | 3407 |
| kN Force | @3 BAR | 67.39 | 74.50 | 80.12 | 84.65 | 88.33 | 91.63 | 95.16 | 99.35 |
| @4 BAR | 92.19 | 101.14 | 108.37 | 114.48 | 119.71 | 124.49 | 129.35 | 134.85 |
| @5 BAR | 116.52 | 127.36 | 136.16 | 143.61 | 150.09 | 156.08 | 162.19 | 168.98 |
| @6 BAR | 143.26 | 155.70 | 165.72 | 174.35 | 182.12 | 189.54 | 197.05 | 204.99 |
| @7BAR | 167.54 | 181.66 | 192.94 | 202.76 | 211.80 | 220.56 | 229.36 | 238.43 |
The benefits of this design are mainly the following:
1,Improve the curve working ability of the air spring
In some production work, the curve working capacity requirement of the air spring is relatively high, the mounting hoop can be effective, and the curve working ability of the air spring is improved, and the more the number of curves, the stronger the surface working ability.
2. Extend the service life of the air spring
The air spring airbag and the upper and lower end caps are connected by crimping. If the hoop expansion width is not controlled by the hoop, when the air spring is compressed by pressure, the folding of the skin and the curling edge will be relatively high, and the height folding will be repeated. Accelerate the aging of the end cap joints and shorten the service life of the air springs.
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