CL Thruster Disc Brakes
service duty brakes
shown with ventilated disc
|
CL11 Thruster Disc Brakes
with maintenance free
self adjusting mechanism
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Spring Set 3 Phase Thruster Released Disc Brakes
Dimensions
- All metric in-line and compact type
Construction
- Fabricated steel mechanism
- Major pivots non-ferrous bushed
- All pins ground stainless steel
- Friction linings high temperature non asbestos
- Optional sintered metallic linings
Thrusters
- Standard Eltma Elhy EB series IP56 enclosed
Special Options -Self adjusting mechanism
- Mechanical release lever
- Limit switches to monitor release/ set or wear
- Electronic modulated torque by remote pedal
- Special materials, tests and finishes as required,
including high integrity requirements.
Applications
- Mechanical handling equipment, cranes, winches,
stacker reclaimers and conveyers etc.
Engineering
- Design and selection assistance available
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CL11-EB300 Thruster Disc Brakes
service duty brakes
Foot Pedal Modulated
|
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Brake Selection
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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 FL torque is given by:
- [(kW x 9550) / rpm]Nm or [(HP x 5250) / rpm]Lbft
Calculate stopping torque based on the diameter of your disc, use the following table and equations:
Imperial Torque
Dynamic Torque = AF x 0.43 x (D - F) / 24
Static Torque = AF x 0.40 x (D - F) / 24
Metric Torque
Dynamic Torque = AF x 0.43 x (D - F) / 2000
Static Torque = AF x 0.40 x (D - F) / 2000
AF = Applied Force
D = Disc Diameter
F = Swept Face
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Brake Model Data
BRAKE
MODEL |
DISC
DIA. "D" (1) |
THRUSTER
MODEL | APPLIED
FORCE "AF" |
SWEPT
FACE "F" |
WEIGHT |
| |
mm (in) |
|
kN (Lb) |
mm (in) |
kg (lb) |
| CL11 |
250-500
(9.8-19.7) |
EB220 |
5250
(1180)
|
55 (2.2) |
56 (123) |
| |
|
EB300 |
7125
(1600) |
|
|
| CL10 |
315-630
(12.4-24.8) |
EB20 |
4980
(1120) |
80 (3.15) |
95 (209) |
| |
|
EB300 |
7910
(1780) |
|
95 (209) |
| |
|
EB50 |
12483
(2806) |
|
99 (218) |
| |
|
EB80 |
21386
(4808) |
|
105 (232) |
| CL20 |
400-710
(15.7-27.9) |
EB50 |
14690
(3300) |
120 (4.7) |
157 (346) |
| |
|
EB80 |
23519
(5287) |
|
163 (359) |
| |
|
EB150 |
38000
(8546) |
|
163 (359) |
| CL30 |
630-800
(24.8-31.5) |
EB150 |
38990
(8766) |
130 (5.1) |
255 (562) |
| |
|
EB250 |
62780
(14110) |
|
268 (591) |
| |
|
EB320 |
95160
(21390) |
|
275 (606) |
| CL25 |
450-1000
(17.7-39.3) |
EB1250 |
38300
(8620) |
120 (4.7) |
230 (507) |
| |
|
EB2000 |
62300
(14015) |
|
275 (606) |
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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
- Johnson/Eldro/Elhy/Elco to din 15430.
- Johnson DC Custom
- Thrusters Also type KT/TKF can be supplied.
- Flame proof available
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CL30 Thruster Disc Brakes
Service duty brakes
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