Model: DS1050D Opposing Piston, Floating Assembly
Dual Actuators, US Navy Whip Hoist
Model: DS3040A, Direct Acting and Free Floating, Spring / Hydraulic Disc Brakes
Base style, US Navy Portal Crane Hoists
Model: DS3040B
Base Style, Mine Hoist Application
Model: DS2040C, Direct Acting and Free Floating, Spring / Hydraulic Disc Brakes
Base Style, Ship Loader Hoist Brake
Direct Acting Spring Disc Brakes
– Applications include:
– Hoist and Conveyor systems
DS Brake Features include:
- Spring set, hydraulic pressure release
- Self-contained removable actuators
- Many spring stack options
- Stroke / wear adjustment
- Spring caging feature
- Hydraulic pressure isolated from disc
- Actuator manual release / retraction
- Fixed assemblies with opposing actuators
- Floating assemblies with low friction float bearings
- Floating assemblies with single or opposing actuators
- Narrow profile with actuators on one side
- Single and multiple actuator assemblies
- Optional bases for fixed and floating assemblies
- Optional release and wear proximity – switches
- Flow through actuators – better oil filtering
Direct Acting Brake Caliper Selection:
The brake size must be chosen to give required braking torque and to dissipate the energy during stopping without over heating the disc. Brake torque is often related to drive motor torque by an arbitrary service factor typically 75% -100% full load torque for crane travel and similar inertial loads which tend to be self stopping or 150% -200% for crane hoists and other overhauling loads. If a precise stop time or distance is specified, then the brake torque must be calculated.
Brake Model Dat
| MODEL
|
Swept Face “F”
in(mm) |
MIN. DISC DIA. “D”
in(mm) |
MIN. Dynamic TORQUE
Lb.ft(Nm) |
APPLIED FORCE
lb(n) |
| DS1025-08
|
8 (200) | 30 (762) | 27000 (36700) | 59200 (263300) |
| DS2025-08
|
8 (200) | 40 (1016) | 79000 (107500) | 119000 (529000) |
| DS3025-08
|
8 (200) | 60 (1524) | 192800 (261400) | 178000 (792000) |
| DS1040-09
|
9 (229) | 35 (889) | 45500 (61600) | 84000 (373000) |
| DS2040-09
|
9 (229) | 50 (1270) | 142600 (193400) | 167000 (743000) |
| DS3040-09
|
9 (229) | 70 (1778) | 318900 (432400) | 251000 (1117000) |
| DS1050-10
|
10 (254) | 40 (1016) | 64300 (87200) | 103000 (458000) |
| DS2050-10
|
10 (254) | 55 (1397) | 192100 (260500) | 205000 (912000) |
| DS3070-10
|
10 (254) | 80 (2032) | 449100 (608900) | 308000 (1370000) |
| DS1070-12
|
12 (305) | 50 (1270) | 113200 (153400) | 143000 (636000) |
| DS2070-12
|
12 (305) | 70 (1778) | 346700 (470100) | 287000 (1277000) |
| DS3070-12
|
12 (305) | 100 (2540) | 788300 (1068800) | 430000 (1913000) |