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Industrial Crane Safety Disc Brakes

The SBD Crane Safety Disc Brake is a high-power braking device used on low-speed shafts (drum shafts), and can be widely applied to the emergency safety braking of low-speed shafts in large and medium-sized cranes, port handling machinery lifting, and boom hoisting mechanisms. Working braking and emergency safety braking for mine winches, hoists and high-power inclined belt conveyors, safety braking for the drive mechanisms of cable cars and cable-stayed cranes, and safety (emergency) braking for the low-speed shafts of the hoisting mechanisms of special cranes such as casting cranes.

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Description

Industrial Industrial Crane Safety Disc Brakess

The SBD series industrial disc brake is a normally closed hydraulic safety braking device that uses disc springs to apply braking force and hydraulic pressure to release it. It features quick response and short closing time, making it widely used in heavy-duty industrial applications such as port machinery, mining hoisting equipment, and wind power generation.

Industrial Industrial Crane Safety Disc Brakess

SBD-A

SBD-B

SBD-C

SBD-D

Model Signifcance

product-898-290

Order Example

(SBD250-A-1600×30 IRL means its rated clamping force is 250KN with release limit switch and A-type safety brake of I version installation. The brake disc diameter is 1600mm and the disc thickness is 30mm.)

SBD-A Industrial Crane Safety Disc Brakes

sbd-a dimension sbd-a dimensions

Installation diagram

Braking torque:M=μ×d1×F(Nm)
In it:μ-the value of friction coefficient μ=0.35

d1-disc friction diameter d1=D-135(mm)
or D-155(mm)(the latter is specially used in SBD315-A)

F-total clamp force(KN)

Notes:1)D-Brake disc diameter for Φ800≤ΦD≤Φ1800(mm)

2)d2-max.allowable drum or hub diameter d2=D-270(mm)

Brake type	Total ciamp force(KN)	Braking force(KN)	Cylinder pressure(bar)	Oil volume(ml)	Released clearance(mm)	Dimensions(mm)								Weight(kg)
Brake type	Total ciamp force(KN)	Braking force(KN)	Cylinder pressure(bar)	Oil volume(ml)	Released clearance(mm)	A	C	d	d2 max	D	A1	A2	b	Weight(kg)
SBD100-A	100	72	80	90	0.75~1.5	0.171ΦD+220	0.470ΦD-127	ΦD-135	ΦD-270	Φ800≤ΦD≤Φ1800	295	220	30 (25) (36)	195
SRD125-A	125	90	90	90	0.75~1.5						315	220		195
SBD160-A	160	115	110	75	0.75~1.25						315	235		195
SBD200-A	200	144	100	120	0.75~1.5						315	235		235
SBD250-A	250	180	120	100	0.75~1.25						350	258		235
SBD315-A	315	220	110	160	0.75~1.25	0.171ΦD+238		ΦD-155	ΦD-310		355	260	30(25)	280

Note:The original types of SBD-A series Industrial Industrial Crane Safety Disc Brakess are SBD. The size of the specifictype and structure should be retained.

SBD-B Industrial Crane Safety Disc Brakes

SBD-B dimension

Installation diagram

Braking torque:M=μ×d1×F(Nm)
In it:μ-the value of friction coefficient μ=0.35

d1-disc friction diameter d1=D-150(mm)

F-total clamp force(KN)

Notes:1)D-Brake disc diameter for D≥Φ1800(mm)

2)d2-max.allowable drum or hub diameter d2=D-360(mm)

Brake type	Rated clamp force (KN)	Braking force (KN)	Cylinder pressure (bar)	Oil volume (ml)	Released clearance (mm)	Dimensions(mm)							Weight (kg)
Brake type	Rated clamp force (KN)	Braking force (KN)	Cylinder pressure (bar)	Oil volume (ml)	Released clearance (mm)	A max	A1max	A2	C	C1	ΦE	D	Weight (kg)
SBD80-B	80	57	95	55	1~2	470	390	450	115	150	120	≥Φ800	270
SBD160-B	160	115	95	115	1~2	485	415	460	165	215	155	≥Φ800	310

The original types of SBD-B series safety brakes are SBB.

Fricton coefficient:Static 0.4,dynamic 0.35.

Note:The size of the specific type and structure should be retained.

SBD-C Industrial Crane Safety Disc Brakes

SBD-C dimension

Installation diagram

Braking torque:M=μ×d1×F(Nm)
In it:μ-the value of friction coefficient μ=0.35

d1-disc friction diameter d1=D-220(mm)

F-total clamp force(KN)

Notes:1)D-Brake disc diameter for D≥Φ1800(mm)

2)d2-max.allowable drum or hub diameter d2=D-500(mm)

Brake type	Rated clamp force (KN)	Braking force (KN)	Cylinder pressure (bar)	Oil volure (ml)	Released clearance (mm)	Dimensions (mm)			Weight (kg)
Brake type	Rated clamp force (KN)	Braking force (KN)	Cylinder pressure (bar)	Oil volure (ml)	Released clearance (mm)	A max	A1	D	Weight (kg)
SBD250-C	250	180	80	275	1~2	595	378	≥Φ1800	660
SBD365-C	365	262	80	275	1~2	790	570	≥Φ1800	720
SBD425-C	425	306	95	275	1~2	790	570	≥Φ1800	730

The original types of SBD-C series safety brakes are SBB.

Friction coefficient:Static 0.4, dynamic 0.35.

Note:The size of the specific type and structure should be retained.

SBD-D Industrial Crane Safety Disc Brakes

SBD-D dimension

Installation diagram

Braking torque:M=μ×d1×F(Nm)

In it:μ-the value of friction coefficient μ=0.35

d1-disc friction diameter (mm)

F-total clamp force(KN)

Notes:1)D-Brake disc diameter for D≥Φ600(mm)

2)d2-max.allowable drum or hub diameter (mm)

Brake type	Rated clamp force (KN)	Braking force (KN)	Cylinder pressure(bar)	Oil volume(ml)	Released clearance(mm)	Weight(kg)	Dimensions (mm)
							A	C	D
SBD50-D	50	36	50	150	0.75-1.5	92	170	D/2+35	≥Φ600
SBD80-D	80	57	80	125		185	Sin20°(D/2-45)+320.5	Cos20°(D/2-45)+16.5
SBD100-D	100	72	80	150	0.75-1.5	180	200	D/2+55	≥Φ600
SBD120-D	120	86	85	150		193	Sin20°(D/2-45)+320.5	Cos20°(D/2-45)+16.5
SBD240-D	240	172	100	170	0.75-1.5	310	Sin20°(D2-45)+345	Cos20°(D/2-75)+20	≥Φ600

Brake type	Dimensions (mm)
	d1	d2max	B	L	n	k	F	P	H	m	W	L1	L2	L3	d	h	e
SBD50-D	Φ-90	Φ-180	80	278	25	130	180	140	309	80	220	190	220	115	Φ26
SBD80-D				320	45	240	330	170	485	75	240				Φ32	320.5	16.5
SBD100-D	Φ-90	Φ-180	80	320	45	240	330	195	460	75	240	190	220	115	Φ32
SBD120-D								170	485							320.5	16.5
SBD240-D	Φ-150	Φ-300	140	400	60	300	420	190	560	120	360	225	255	160	Φ38	345	20
Note: The size of the specific type and structure should be retained

Fine adjustment after brake shoe wear during normal operation

Pad wear thin → brake release clearance increases (must adjust if >2 mm), or reset the clearance after replacing new pads:

Set the hydraulic station to the release pressure, and measure the single-side clearance at four or more evenly distributed points around the disc using a feeler gauge.
Excessive clearance: Loosen the adjusting sleeve locknut → Turn the adjusting sleeve or adjustment bolt forward (inward) to advance the brake shoe backplate → While turning, rotate the disc and recheck.
Both brake shoes of a brake unit must be adjusted simultaneously. After adjustment, repeatedly raise and lower the oil pressure (release-brake) 3 to 5 times, then re-measure; only when the values stabilize is the process complete.
If equipped with a return spring (non-hydraulic cylinder rear-mounted type), also check that the return spring is not compressed solidly, otherwise braking torque will be lost.
After adjustment, perform a sudden power loss test: when the system suddenly loses power, the brake shoes should immediately engage without delay or sticking.

After Sales Service:
1.All the products have one year guarantee.
2.Providing professional installation instructions and video of troubleshoot.
3.We supply after sales service for 24 hours, 7 days per week. Customer can contact us any time.

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