Type SMP Fluid Coupling

Description

A constant-fill coupling built for belt drives.

Fluidomat-SMP are constant-fill, fixed-speed fluid couplings for belt drive, offering a wide range of pulley diameters. They deliver the soft-start, load-limiting and shock-absorbing benefits of fluid coupling drive in a compact pulley-mounted form.

Each SMP has a built-in delayfil chamber that enables quick decay of the motor starting current as the motor accelerates to 90% speed faster. The range is suitable for two consecutive starts from hot and three from cold, with a fusible plug blow-off temperature of 130°C as standard (160°C optional). A vertical-type SMP fluid coupling is also available.

Fluidomat Type SMP pulley-type fluid coupling

Key data

450

KW max rating (SMP-11R)

11

Models, 1R–11R

130°C

Fusible plug (160°C optional)

2 + 3

Starts hot / cold

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Product specifications

Features at a glance

Fluid couplings for belt drive offering a wide range of pulley diameters
Built-in delayfil chamber for quick decay of motor starting current
Motor accelerates to 90% speed faster, easing the drive on start-up

Suitable for two consecutive starts from hot and three from cold
Fusible plug blow-off temperature 130°C standard, 160°C optional
Vertical-type SMP fluid coupling available for special drive layouts

Selection data

Rating table — SMP

Maximum ratings in KW at different input speeds (RPM). For final selection, please consult Fluidomat application engineering.

Maximum rating (KW) by input speed — Type SMP
Model	750	900	1000	1200	1500	1800
1R	0.6	1	1.5	2.5	5	8
2R	0.9	1.6	2.2	3.8	7.5	12
3R	1.2	2.1	3	5	10	15
4R	2.3	4	5.5	9.5	18.5	25
5R	4.1	7	10	17	30	38
6R	5.6	10	13.3	23	45	60
7R	8.3	15	20	34.6	67.5	85
8R	11.2	19	26	46	90	120
8B-R	16.6	29	39.4	68	133	180
9R	19	33	45	78	152	200
10R	36	62	85	147	250	325
11R	87	150	205	355	450	—

Ratings shown are for maximum pulley diameter in direct pulley mounting. Full dimension tables, pulley-groove details, weights and oil quantities are available in the SMP catalogue.

Selection data

Technical specification & dimensions

Full dimension, connected-flexible-coupling, brake-drum and mass-moment-of-inertia data, as published by Fluidomat.

Technical specification & dimension table

Model SMP	Ø A	B	BV	Ø d1 max	Ø1	Dry wt (kg)	Max oil (L)	Threads M (BSW)
SMP-1R	280	219	239	38	91	18	2.2	1/2"
SMP-2R	310	205	225	38	91	25	2.8	3/4"
SMP-3R	330	262	282	42	110	30	3.3	3/4"
SMP-4R	360	284	304	42	110	35	4.1	3/4"
SMP-5R	395	331	351	65	142	46	6.5	1"
SMP-6R	420	374	394	65	142	65	8.3	1 ½"
SMP-7R	465	395	415	75	142	92	11.1	1 ½"
SMP-8R	505	430	450	85	142	115	14.6	1 ½"
SMP-8B-R	553	495	515	90	155	121	18	1 ½"
SMP-9R	570	512	532	90	170	127	22	1 ¾"
SMP-10R	630	535	555	110	210	220	28.5	1 ¾"
SMP-11R	740	590	610	110	210	275	44.8	Ø50-8P

Dimensions in mm; dry weight in kg; oil filling in litres. BV = pulley vertical-up dimension.

Pulley details

Direct-pulley-mounting and Type-A pulley options per model — maximum number of grooves, PCD (max/min) and key dimension âKâ Â± 1.5, by belt section.

MODEL	PULLEY GROOVE 'SEC'	DIRECT PULLEY MOUNTING				PULLEY GROOVE 'SEC'	PULLEY TYPE-A
		MAX. NO OF GROOVES	' D1' PCD		' K' ± 1.5		MAX. NO OF GROOVES	' D2' PCD		' K' ± 1.5
		MAX. NO OF GROOVES	MAX	MIN	' K' ± 1.5		MAX. NO OF GROOVES	MAX	MIN	' K' ± 1.5
SMP-1R	SPA/A	3	260	140	16	—	—	—	—	—
	SPB/B	2	260	146	19	—	—	—	—	—
	SPC/C	1	260	156	23	—	—	—	—	—
SMP-2R	SPA/A	4	300	140	16	—	—	—	—	—
	SPB/B	3	300	147	19	—	—	—	—	—
	SPC/C	2	300	157	23	—	—	—	—	—
SMP-3R SMP-4R	SPB	3	160	145	26	A	5	260	160	18
	SPB	4	140	140	26	B	4	260	165	21
	B	4	140	140	26	C	3	260	170	26
	B	3	160	145	26	SPA	5	260	160	18
	C	2	140	140	31	SPB	4	260	165	21
	C	2	160	145	31	SPC	3	260	170	26
SMP-5R	B	5	180	175	23	-	-	-	-	-
	C	3	200	185	27	B	5	325	209	23
	C	4	185	180	27	C	4	325	215	27
	SPB	5	180	180	23	-	-	-	-	-
	SPC	3	200	195	27	SPB	5	325	213	23
	SPC	4	190	190	27	SPC	4	325	223	27
SMP-6R	B	6	200	175	34	B	6	350	220	22
	B	6	225	210	32	C	5	350	225	27
	C	5	200	180	32	SPB	6	350	222	22
	C	5	225	215	30	SPC	5	350	232	27
	SPB	6	200	180	—	—	—	—	—	—
	SPB	6	225	215	34	—	—	—	—	—
	SPC	5	200	190	32	—	—	—	—	—
	SPC	5	225	225	30	—	—	—	—	—
SMP-7R	B	6	228	195	26	B	6	380	224	26
	C	5	224	205	30	C	5	380	230	30
	C	5	200	200	30	SPB	6	380	230	26
	SPB	6	228	200	26	SPC	5	380	240	30
	SPC	5	225	215	30	—	—	—	—	—
SMP-8R	B	8	250	240	20	B	8	420	260	18
	B	8	235	225	20	C	6	420	265	22
	C	6	250	240	24	SPB	8	420	265	18
	C	6	235	230	24	SPC	6	420	275	22
	SPB	8	250	240	20	—	—	—	—	—
	SPB	8	235	230	20	—	—	—	—	—
	SPC	6	250	240	24	—	—	—	—	—
	SPC	6	235	235	24	—	—	—	—	—
SMP-8B-R SMP-9R	B	10	250	235	28	B	10	500	260	25
	C	8	250	240	32	C	8	500	265	29
	SPB	10	250	240	28	SPB	10	500	265	25
	SPC	8	250	250	32	SPC	8	500	275	25
SMP-10R	SPB/B	12	350	285	19	SPB/B	12	520	360	19
SMP-10R	SPB/C	9	345	295	23	SPC/C	9	520	360	23
SMP-11R	SPB	11	359	300	5.0	SPB	11	500	360	3
	SPC	8	369	310	2.5	SPC	8	500	370	3
	B	11	350	292	5.0	B	11	500	352	2
	C	8	355	300	2.5	C	8	500	360	3

Construction & diagrams

Diagrams & views

Typical applications

Made for belt-driven machinery

Belt conveyors Bucket elevators Crushers Fans & blowers Pumps Compressors Mixers & agitators Screens & feeders

Constant-Fill CouplingsFixed-speed soft-start range Variable Speed ScoopEnergy-saving speed control Catalogues & downloadsSMP datasheets & dimensions

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