Direct Acting Spring Disc Brakes

Direct Acting Caliper Disc Brakes

Description

Direct Acting Spring Disc Brakes

Direct Acting Spring-Applied Disc Brakes can be used for multiple applications including hoist and conveyor systems,

making them ideal for various industries such as Mining (conveyors, ball and sag mills), Oil (service and emergency

Self contained actuators   Individual actuators are field replaceable, provide brake force adjustment, and include spring caging feature

Self contained actuators
Individual actuators are field replaceable, provide brake force adjustment, and include spring caging feature

brakes for drawworks), Steel (emergency brakes for main hoist), Container Cranes/Bulk Handling (Emergency Caliper Disc Brakes), and others.

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 Caliper Brakes

Direct Acting Caliper Disc Brakes and Hydraulic Power Unit


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.
Motor Full Load Torque is given by:
MFLT = [(kW x 9550) / rpm]Nm or [(HP x 5250) / rpm]LbftCalculate stopping torque based on the diameter of your disc, use the following table and equations:Imperial Torque
Dynamic Torque = AF x 0.50 x (D – F) / 24
Static Torque = AF x 0.40 x (D – F) / 24Metric Torque
Dynamic Torque = AF x 0.50 x (D – F) / 2000
Static Torque = AF x 0.40 x (D – F) / 2000

AF = Applied Force
D = Brake Disc Diameter
F = Swept Face is 8-12 inches [200-305 mm]

Kor-Pak Corporation supplies industrial braking systems and accessories including:ds1 disc brakes, drum brakes, rail clamps, hoist brakes, conveyor brakes, industrial brake calipers, rail brakes, brake discs, brake drums, thruster disc brakes, thruster drum brakes, magnet disc brakes, and many other hydraulic and pneumatic brake systems

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)

 

 

 

 

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