Description

Product Overview

Our steel mill industry drum brakes are spring-applied, power-off safety brakes engineered to deliver continuous, reliable deceleration and fail-safe holding torque under the extreme heat, high-frequency duty cycles, and intensive dust conditions of metallurgical crane and ladle hoisting systems.

High-Temperature & Severe Duty Engineering

Thermal Shock Resistant Metallurgy: Cast from high-grade alloyed ductile iron (220 to 260 HBW) specifically stabilized to prevent structural cracking and geometric warping during rapid thermal spikes up to 450 degrees Celsius.

Heavy-Duty Sintered Friction Matrix: Equipped with premium iron- or copper-based sintered metallic linings that maintain a completely stable friction coefficient (0.38 to 0.45) under continuous high-heat operations, eliminating thermal fade.

High-Ambient Insulation Protection: Interfacing actuators and coils feature Class H or tropicalized Class H insulation (180 degrees Celsius thermal limits), preventing electrical burnouts near melting furnaces and pouring zones.

Enclosed Fatigue-Resistant Springs: Braking springs are fully encapsulated within a heavy-wall protective steel tube to prevent airborne slag, iron filings, and scale from damaging the spring mechanics.

Model Designation:

product-907-236

product-1528-1118

product-1516-1096

Brake Auxiliary Functions Table
Auxiliary Device Codes	Name of Auxiliary Devices
M	Brake Pad Wear Automatic Compensation Device
K1	Brake Release Stroke Travel Switch
K2	Brake Engagement Stroke Indication Travel Switch
K3	Brake Pad Wear Limit Indication Switch
S1	Left-hand Manual Release Device
S2	Right-hand Manual Release Device
F	Shield

key technical specifications

Unit:mm

Model		Brake wheel diameter	Braking torque (Nm)	Retreat distance (mm)	A	b	C	D	d	E	F	G1	G2	Hmax	h1	i	K	L	M	n	Weight (Kg)
Brake	Matching thrusters
YWZ9(YWZ5)-160/23	Ed23/5	160	80-160	1.0	430	65	160	160	14	145	85	145	195	435	132	55	130	145	120	8	32.5
YWZ9(YWZ5)-200/23	Ed23/5	200	112-200	1.0	470	80	160	200	14	175	90	165	265	500	160	55	145	150	140	10	35
YWZ9(YWZ5)-200/30	Ed30/5		140-315																		38
YWZ9(YWZ5)-250/23	Ed23/5	250	140-250	1.0	535	100	160	250	18	205	110	200	290	570	190	65	180	180	160	12	42
YWZ9(YWZ5)-250/30	Ed30/5		180-315																		45
YWZ9(YWZ5)-250/50	Ed50/6		315-500		575		190														50
YWZ9(YWZ5)-300/23	Ed23/5	300	180-280	1.25	590	125	160	300	18	255	115	245	330	585	225	80	220	170	180	12	70
YWZ9(YWZ5)-300/30	Ed30/5		250-400																		70
YWZ9(YWZ5)-300/50	Ed50/6		400-630		630		190														75
YWZ9(YWZ5)-300/80	Ed80/6		630-1000																		80
YWZ9(YWZ5)-315/23	Ed23/5	315	180-280	1.25	590	125	160	315	18	255	115	245	330	585	225	80	220	170	180	12	70
YWZ9(YWZ5)-315/30	Ed30/5		250-400																		70
YWZ9(YWZ5)-315/50	Ed50/6		400-630		630		190														75
YWZ9(YWZ5)-315/80	Ed80/6		630-1000																		80
YWZ9(YWZ5)-400/30	Ed30/5	400	200-470	1.25	670	160	160	400	22	310	160	310	420	715	280	100	270	170	220	14	88
YWZ9(YWZ5)-400/50	Ed50/6		400-800		710		190														95
YWZ9(YWZ5)-400/80	Ed80/6		630-1250																		110
YWZ9(YWZ5)-400/121	Ed121/6		1000-2000		700		240							775							125
YWZ9(YWZ5)-500/50	Ed50/6	500	450-1000	1.25	810	200	190	500	22	385	180	365	535	810	335	130	325	180	280	16	175
YWZ9(YWZ5)-500/80	Ed80/6		800-1600
YWZ9(YWZ5)-500/121	Ed121/6		1120-2500		800		240							845							190
YWZ9(YWZ5)-500/201	Ed201/6		2000-4000
YWZ9(YWZ5)-600/121	Ed121/6	600	1800-2800	1.6	925	240	240	600	26	470	220	450	600	1035	425	170	400	185	340	25	300
YWZ9(YWZ5)-600/201	Ed201/6		2500-4500
YWZ9(YWZ5)-600/301	Ed301/6		4000-6500																		305
YWZ9(YWZ5)-630/121	Ed121/6	630	1800-3150	1.6	925	250	240	630	26	470	220	450	600	1035	425	170	400	185	340	25	310
YWZ9(YWZ5)-630/201	Ed201/6		2500-5000
YWZ9(YWZ5)-630/301	Ed301/6		4000-7100																		315
YWZ9(YWZ5)-700/201	Ed201/6	700	2500-5600	1.6	980	280	240	700	27	525	240	500	650	1140	475	190	450	220	360	30	420
YWZ9(YWZ5)-700/301	Ed301/6		4000-8000																		425
YWZ9(YWZ5)-710/201	Ed201/6	710	2500-5600	1.6	980	280	240	710	27	525	240	500	650	1140	475	190	450	220	360	30	420
YWZ9(YWZ5)-710/301	Ed301/6		4000-8000																		425
YWZ9(YWZ5)-800/301	Ed301/12	800	10500-12500	2.0	1230	320	240	800	27	595	280	570	830	1355	530	210	520	240	440	30	545

Note:1. Specific models, structures and overall dimensions are subject to change without prior notice. 2. Customized normally open, explosion-proof and non-standard products are available upon customer request. 3. Products compatible with the YT1 series thrusters can be manufactured according to customer needs. (Note: The overall dimensions shall be subject to the updated version.)

key technical specifications

Brake model	Matching thrusters	Braking torque (N.m)	Retreat distance	A	b	C	D	d	E	F	G1	G2	^H_Hmax	h1	i	K	M	n	G3	Weight (Kg)
YWZ9(YWZ5)-160/25	YT1-25Z/4	112-180	0.7	385	65	160	160	14	145	85	145	195	⁴⁰⁰₄₄₀	132	55	130	120	8	65	46
YWZ9(YWZ5)-200/25	YT1-25Z/4	112-225		425	80	160	200	14	175	90	165	265	500	160	55	145	140	10	75	46
YWZ9(YWZ5)-250/25	YT1-25Z/4	140-225	1.0	495	100	160	250	18	205	110	200	290	585	190	65	180	160	12	100	53
YWZ9(YWZ5)-250/45	YT1-45Z/6	250-400		505																54
YWZ9(YWZ5)-315/25	YT1-25Z/4	180-280	1.1	545	125	160	315	18	255	115	245	330	585	225	80	220	180	12	135	77
YWZ9(YWZ5)-315/45	YT1-45Z/6	315-630		557		195														79
YWZ9(YWZ5)-315/90	YT1-90Z/8	630-1250		573									645							101
YWZ9(YWZ5)-400/45	YT1-45Z/6	400-630	1.25	639	160	195	400	22	310	160	310	420	715	280	100	270	220	14	150	99
YWZ9(YWZ5)-400/90	YT1-90Z/8	800-1250		655									760							131
YWZ9(YWZ5)-400/125	YT1-125Z/10	1120-1800		677		240							845							138
YWZ9(YWZ5)-500/90	YT1-90Z/8	1000-1600	1.25	754	200	195	500	22	390	180	365	535	840	335	130	325	280	16	185	196
YWZ9(YWZ5)-500/125	YT1-125Z/10	1400-2250		776		240							890							203
YWZ9(YWZ5)-500/180	YT1-180Z/12	2000-3150											960							226
YWZ9(YWZ5)-630/125	YT1-125Z/10	1800-2800	1.6	900	250	240	630	26	470	220	450	600	1075	425	170	400	340	25	280	313
YWZ9(YWZ5)-630/180	YT1-180Z/12	2500-4000											1145							336
YWZ9(YWZ5)-630/320	YT1-320Z/12	4800-7100		960									1175							415
YWZ9(YWZ5)-710/180	YT1-180Z/12	3100-4500	1.6	957	280	240	710	27	530	240	500	650	1255	475	190	450	360	30	300	456
YWZ9(YWZ5)-710/320	YT1-320Z/12	5000-8000		1018									1305							535
YWZ9(YWZ5)-800/320	YT1-320Z/12	6300-10000	1.6	1130	320	240	800	27	600	280	570	830	1530	530	210	520	440	30	310	710

Note: 1. Please specify when ordering products with dimensions indicated in parentheses. 2. Specific models, structures and overall dimensions are subject to change without prior notice. 3. Customized normally open, explosion-proof and non-standard products are available upon customer request.

Precision Manufacturing & Tolerance Controls

Production Component	Control Method & Metallurgical Metric
Brake Drum Body	Precision dynamic balancing and ultrasonic fault-testing to eliminate interior micro-voids.
Linkage Mechanism	High-tensile forged steel arms with a structural parallelism tolerance of less than or equal to 0.04 mm.
Pivot Assemblies	Solid stainless steel 304 pins running inside high-temperature graphite-plugged bronze bushings.
Arm Synchronization	Mechanical equal-clearance balance bars adjusting side gaps (0.6 mm to 1.0 mm) to block single-shoe dragging.
Surface Shielding	Multi-layer heat-resistant silicone zinc primer followed by an abrasive-resistant topcoat.

Rigorous Metallurgical Verification Before Delivery

Every steel mill assembly is validated on our heavy-load dynamic simulation rig to ensure structural survival before leaving the factory. Factory Test Reports (FTR) confirm:

High-Temperature Static Holding Test: Verifies nominal braking torque capacity while the drum is pre-heated to 350 degrees Celsius.

Rapid Cycle Duty Simulation: 500 consecutive open/close operations under load to verify thruster stroke stability.

Linkage Alignment Audit: Precision sensor logging of synchronous shoe retraction and zero mechanical binding.

Smart Upgrades & Configuration Matrix

Category	Available Engineering Options
Automation Upgrades	Mechanical automatic wear compensation mechanism to eliminate manual structural adjustments.
Real-Time Telemetry	High-temperature inductive limit switches for open/close feedback and lining wear depletion alarms.
Thermal Monitoring	Built-in PT100 temperature sensors embedded inside the brake shoe for live control-room telemetry.
Manual Operations	Lockable manual hand-release levers equipped with electrical interlock safety switches.
Drive Integration	High-performance AC/DC electro-hydraulic thrusters compliant with DIN 15435 mounting footprints.

Product Certificate

Maintenance & Operational Longevity Focus

Lining Reductions: Inspect the integrated wear indicators monthly; replace the sintered lining sets when they reach the 3mm safety limit.

Thermal Clearing: Keep the drum track clear of heavy accumulations of sintered dust or iron scale by using dry compressed air during scheduled line maintenance.

Stroke Adjustments: Monitor the actuator reserve stroke regularly to ensure the extreme thermal expansion of the drum does not lead to partial shoe dragging.

FAQ

Q: Why are sintered metallic linings required for steel mill brakes instead of standard organic linings?

A: Standard organic linings break down and experience severe thermal fade (loss of friction) above 250 degrees Celsius. Sintered metallic linings maintain their structural grip and wear resistance up to 450 degrees Celsius, which is critical for handling molten metal ladle cranes.

Q: Can these brakes directly replace old existing European or American steel plant brakes?

A: Yes. Our frames are engineered strictly to standard DIN 15435 and AISE NEMA dimensions, allowing direct drop-in replacement on existing crane baseplates without structural modification.

Q: How does the automatic wear compensation device survive the harsh dust of a steel mill?

A: The automatic compensator is fully mechanical and enclosed within a sealed housing, protecting its tracking gears from the abrasive iron filings and ambient dust typical of blast furnaces.

Q: What specific data must be provided for a ladle crane brake quote?

A: Please provide the required safety holding torque (Nm), drum diameter, matching motor frame/shaft size, ambient temperature profile of the crane bay, and your required electrical voltage.

Hot Tags: drum brakes for steel mill industry, China drum brakes for steel mill industry manufacturers, suppliers, factory, Drum Brakes for Cranes, Electromagnetic Drum Brake, Explosion Proof Electric Hydraulic Drum Brakes, Foot Operated Drum Brakes, Hydraulic Brake for Crane, Overhead Crane Drum Brakes

Drum Brakes for Steel Mill Industry

Product Overview

High-Temperature & Severe Duty Engineering

Model Designation:

key technical specifications

key technical specifications

Precision Manufacturing & Tolerance Controls

Rigorous Metallurgical Verification Before Delivery

Smart Upgrades & Configuration Matrix

Product Certificate

Maintenance & Operational Longevity Focus

FAQ