4R Stock Bridge Type Vibration Damper for ACSR Bison
Technical Data
Clamp and keeper : Alu. alloy G.D.C.
Messenger Cable : High strength galvanised steel stranded wire
Mass : C.I. H.D.G. as per IS. 2633
Bolt : M.S. H.D.G. as per IS : 1367
| Sr. No. | Desc. | Material | Surface Treatment | Qty. |
| 8 | Spring Washer | Spring Steel | E.G. | 1 |
| 7 | Bolt M16 | Mild Steel | H.D.G. | 1 |
| 6 | Plain Washer | Mild Steel | H.D.G. | 1 |
| 5 | Cover Half Clamp | Al Alloy | – | 1 |
| 4 | Hook Half Clamp | Al Alloy | – | 1 |
| 3 | Messenger Cable Cable (19 strand) | H.T. Steel (135 kg/mm2) | H.D.G. | 1 |
| 2 | Damper Weight | Cast Iron | H.D.G. | 1 |
| 1 | Damper Weight | Cast Iron | H.D.G. | 1 |
Technical Data
Total Weight : 4.5 kgs ±5%
Weight of (1) : 1.6 kg. ±5%
Weight of (2) : 2.2 kg. ±5%
Clamp slipping strength 2.5 kN
Installation Torque 7 kg – M
Mass pull of strength 5 kN
Dia of each strand of
Messenger Cable 19/2.40 mm.
Overall Dia : 12.00 mm.
General Tolerance : ±3%
Vibration Damper Conform
To IS : 9708 (1993)
4R Stock Bridge Type Vibration Damper for ACSR Skunk
Technical Data
Clamp and keeper : Alu. alloy G.D.C.
Messenger Cable : High strength galvanised steel stranded wire
Mass : C.I. H.D.G. as per IS. 2633
Bolt : M.S. H.D.G. as per IS : 1367
| Sr. No. | Desc. | Material | Surface Treatment | Qty. |
| 8 | Spring Washer | Spring Steel | E.G. | 1 |
| 7 | Bolt M16 | Mild Steel | H.D.G. | 1 |
| 6 | Plain Washer | Mild Steel | H.D.G. | 1 |
| 5 | Cover Half Clamp | Al Alloy | – | 1 |
| 4 | Hook Half Clamp | Al Alloy | – | 1 |
| 3 | Messenger Cable Cable (19 strand) | H.T. Steel (135 kg/mm2) | H.D.G. | 1 |
| 2 | Damper Weight | Cast Iron | H.D.G. | 1 |
| 1 | Damper Weight | Cast Iron | H.D.G. | 1 |
Technical Data
Total Weight : 4.5 kgs ±5%
Weight of (1) : 1.6 kg. ±5%
Weight of (2) : 2.2 kg. ±5%
Clamp slipping strength 2.5 kN
Installation Torque 7 kg – M
Mass pull of strength 5 kN
Dia of each strand of
Messenger Cable 19/2.40 mm.
Overall Dia : 12.00 mm.
General Tolerance : ±3%
Vibration Damper Conform
To IS : 9708 (1993)
Vibration Damper for 7/3.15 mm Earth Wire
Technical Data
Total Weight : 2.4 kgs ±5%
Weight of (1) : 0.7 kg. ±5%
Weight of (2) : 0.95 kg. ±5%
Clamp slipping strength
2.5 kN before fatigue
2.0 kN after fatigue
Installation Torque 5 kg – M
Mass pull of strength 5 kN
Messenger Cable 19/2.11 mm.
Overall Dia : 10.55 mm.
General Tolerance : ±3%
Vibration Damper Conform to drawing
Resonance Frequency
F1-18±2, F2-24±2
F3-38±2, F4-47±2
UTS of messenger cable – 135 kg.
Lay ratio of standard messenger cable 9 to 11
| Sr. No. | Desc. | Material | Surface Treatment | Qty. |
| 1 | Damper Weight | Cast iron IS:210 | H.D.G. | 1 |
| 2 | Damper Weight | Cast iron IS:210 | H.D.G. | 1 |
| 3 | Messenger Cable Cable (19 strand) | H.T. Steel (135 kg/mm2) | H.D.G. | 1 |
| 4 | Hook Half Clamp | Al Alloy A-6 IS:617 | – | 1 |
| 5 | Cover Half Clamp | Al Alloy A-6 IS:617 | – | 1 |
| 6 | Plain Washer | Mild Steel IS:2016 | H.D.G. | 1 |
| 7 | Bolt M12 | Mild Steel IS:6639 | H.D.G. | 1 |
| 8 | Spring Washer | Spring Steel, IS:4072 | E.G. | 1 |
| 9 | Sealing Plague | Pure Al., 19500/1050, IS:733 | 2 | |
| 10 | Tapper Sleeve | Al. Alloy, A-6 IS:617 | 2 |