Thruster Drum Brakes



Thruster Drum Brake with internal springs
shown with R.S.B. drum

SDLX710 Thruster Drum Brakes
Ladle Crane for Steel Industry


Spring Set 3 Phase Thruster Released Drum Brakes

Industry Type
  • General Industrial Code, Prefix: GDL
  • Steel Industry Standard, Prefix: SDL
  • High Integrity Nuclear,  Prefix: HDL
Dimensions
  • Metric as DIN standard code: DL
  • Imperial as A.I.S.E. standard code: SMLA
  • Also non-standard drum sizes and base fixings
Construction
  •  Fabricated steel mechanism
  •  Major pivots non-ferrous bushed
  •  All pins ground stainless steel
  •  Friction linings high temperature non asbestos
Thrusters
  •  Standard Eltma Elhy EB series IP56 enclosed
Special Options   -Self adjusting mechanism
  •  Mechanical release lever
  •  Limit switches to monitor release/ set or wear
  •  Hydraulic override by remote pedal
  •  Electronic modulated torque by remote pedal
  •  Reverse brake mechanism thruster to apply
  •  Soft stop, or soft set
  •  Special materials and finishes as required, including high integrity requirements.

Applications  
  •  Mechanical handling equipment, cranes, winches, stacker reclaimers, ski lifts, and conveyers etc.

Engineering
  • Design and selection assistance available
SMLA Thruster Drum Brakes
SMLA19-EJ125/60 250VDC Thruster Drum Brakes
service duty brakes
Foot Pedal Modulated if required
Brake Selection
The brake size must be chosen to give required braking torque and to dissipate the energy during stopping without over heating the drum. 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 FL torque is given by:
   - [(kW x 9550) / rpm]Nm or [(HP x 5250) / rpm]Lbft



DIN Brake Model Data

BRAKE
MODEL
DRUM
DIA. "D"
THRUSTER
MODEL RANGE
TORQUE
RANGE
WEIGHT
  mm   Nm kg
GDL160 160 EB120-EB220 79 to 131
29
GDL200 200 EB120-EB300 127 to 344
33
GDL250 250 EB220-EB50 285 to 680 39
GDL315 315 EB300-EB80 505 to 1235 80
GDL400 400 EB50-EB125 1080 to 2860 112
GDL500 500 EB80-EB150 3380 to 6000 181
GDL630 630 EB125-EB250 3700 to 7150 281
GDL710 710 EB250-EB3000 7750 to 10700 388


AISE Brake Model Data

BRAKE
MODEL
DRUM
DIA. "D"
THRUSTER
MODEL RANGE
TORQUE
RANGE
WEIGHT
  in   Lbft Lb
SMLA6 6 EB120-EB220 58 to 96
64
SMLA8 8 EB120-EB300 94 to 254
73
SMLA10 10 EB220-EB50 210 to 500 86
SMLA13 13 EB300-EB80 375 to 911 176
SMLA16 16 EB50-EB125 797 to 2110 246
SMLA19 19 EB80-EB150 2494 to 4428 398
SMLA23 23 EB125-EB250 2730 to 5276 618
SMLA30 30 EB250-EB3000 6140 to 8475 880
SMLA Thruster Drum Brakes
AISE Standard SMLA Thruster Drum Brakes
Thruster data
  •  Standard EB Series:
  •  Fluid; transformer oil BS148 typical Shell diala 'B'
  •  Approximate operating times: brake release 0.1 seconds
  •  Brake set 0.25 -0.5 seconds depending on size and brake spring load.

    Optional features
  •  High temperature viton seals.
  •  Internal preset hydraulic delay valve(s)
  •  Dust protecting hood
  •  Internal return c-spring
  •  Converter unit to operate from DC supply 220-440V
  •  Explosion proof design EExd Group I and II


Alternative Thrusters
  • Eldro/Elhy/Elco to din 15430.
  • DC Custom
  • Thrusters Also type KT/TKF can be supplied.
  • Flame proof available
Explosion Proof Thruster Drum Brakes
HDLX Explosion Proof
Thruster Drum Brakes

Western Canada office:  604 940 4555        Eastern Canada Office:  416 213 9991        England Office:  01278 456 411
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