13
METALDRIVE®
METALDRIVE® Disc Couplings
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Direct Drives
METALDRIVE®
METALDRIVE® disc couplings
METALDRIVE® couplings are fully made of steel and are used in all applications where high reliability, precision, and nomaintenance are required.
Features
• All steel
• Superior disc pack profile and assembly optimized for higher
torque and misalignment and lower restoring forces
• Maintenance, lubrication and wear free
• Backlash free and torsionally rigid
• Wide range of temperature allowed: -40°C to 250 °C
• Easy installation
• Bi-directional
• Modular design
• Allow axial, angular, and radial misalignment (only with
double disc pack)
• Available in stainless steel for corrosive environment application
12
3
1) Hub2) Spacer3) Disc pack
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78Direct Drives
METALDRIVE® executions
GMD type DCL /DCC /DC1MR /DC2MR /DCC1MRStandard version with double disc pack and standard lengthspacer. Allows axial angular and radial misalignment.It is possible to mount the hubs reverse (hub R) to obtain acompact drive. It is not possible the radially mounting of thespacer.
GMD type SA2Shaft version with solid shaft construction. Variable shaftlengths are available.
GMD type S Standard version with single disc pack. The coupling allowsaxial and angular misalignment. No radial misalignment is
allowed.
GMD type SA1Tubular shaft version. Shaft is available in various lengths and
can be delivered in welded aluminum or steel.
GMD type DCADouble disc pack execution and anti-fail device. Standardspacer lengths for pump applications. This execution is
available in conformity to API 610 e API 671.
A
A
SEZIONE A-A
d
L
LM P LM
Ø E M
ØØ
Versione standard API 610
L
L
K
K
LMPLM
ØE
L
ØMØ
d
L
ØE
ØM
LM P LMØ
d
Versione GLSA2
Versione GLSA1
L
L
M
M
N
N
Versione GLDCMPMGVersione GLDC2MGVersione GLDC2MP
d
L
ME
LM P1 LM
d1
L
E
LM P1 LM
dd1E M
L
LM P1 LM
SEZIONE L-L SCALA 1 : 2
Ø Ø ØØ ØØ Ø ØØ
L
L
K
K
LMPLM
ØE
L
ØMØ
d
L
ØE
ØM
LM P LM
Ød
Versione GLSA2
Versione GLSA1
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Direct Drives
METALDRIVE®
Technical Features
METALDRIVE® coupling balancing
All the components of the METALDRIVE® couplings are completely machined (spacer excluded) and balanced in classDIN ISO 1940-1 Q 6,3. Therefore, the balancing is unnecessary in most applications. In cases where a higher degree of balancing is required, it is important to consider:
• Rotation speed and coupling diameter• Rotation speed and intermediate shaft length• Rotation speed and special balancing need of the machine
According to the requirement, METALDRIVE® coupling can be statically or dynamically balanced according to DIN ISO 1940-1.As a standard, the balancing is made on the single coupling component. On specific request it can be made the balancing ofthe mounted set. Also as a standard the balancing is made before the key seat machining. The balancing after the key seatmachining is made on specific request. Permissible speed could be limited by the weight and critical speed of spacers. Pleaseconsult our technical department.
SERVOPLUS
LA
AA JJ
Jm
+=
LA
LL JJ
Jm
+=
[ ]°⋅π⋅=β
T
AS
CT180
METALDRIVE / SITEX ST
TS
1
TL
T
CP2P
C2
1C −+
=
nP9550
TN
⋅=
%100%100kk
%100kk
%100kk
w
wM
r
rM
a
aM <⋅∆∆+⋅
∆∆+⋅
∆∆
MisalignmentMETALDRIVE® couplings with double disc pack allow axial,angular, and radial misalignment. METALDRIVE® couplings with single disc pack allow only axialand angular misalignment.Please note that application must not have the maximum valueof axial and angular misalignment at the same time.
Working temperature
-40 °C + 225 °C
The torsional rigidity of a coupling with spacer is calculated as follows:
With CTS = spacer torsional rigidityOperating speed must be equal or less than permissible speed.
Size
Torque (Nm) MisalignmentMax rotationspeed withoutbalancing[min-1]
Torsionalstiffness per disc pack
[Nm/rad •106]
Nominal
Tkn[Nm]
MaxTkmax[Nm]
ReverseTkw[Nm]
Axial ∆Ka [mm]
per disc pack
Angularα [°] per disc pack
Radial∆kr
DCL execution
Radial∆Kr [mm]with spacer
32-6 100 200 30 0,8 0,75 0,32 11500 0,12
38-6 150 300 50 0,9 0,75 0,42 10000 0,16
45-6 300 600 100 1,2 0,75 0,53 8200 0,42
52-6 700 1400 230 1,4 0,75 0,74 6700 0,98
65-6 1100 2200 370 1,6 0,75 0,84 5700 1,85
80-6 1700 3400 570 1,8 0,75 0,92 5000 2,24
90-6 2600 5200 870 1,8 0,75 0,96 4500 3,6
95-6 4000 8000 1330 2 0,75 1,45 4100 9
110-6 7000 14000 2330 2,2 0,75 1,45 3600 11,90
120-6 9000 18000 3000 2,4 0,75 1,6 3100 14,20
138-6 12000 24000 4000 2,6 0,75 1,6 2900 15,60
155-8 25000 50000 8330 2,9 0,5 2,95 2600 37,80
175-8 35000 70000 11670 3,1 0,5 3,15 2400 51,60
190-8 50000 100000 16670 3,4 0,5 3,4 2200 64,40
205-8 65000 130000 21670 3,8 0,5 3,85 2000 69,50
(P1-P)•tan
α
Allowable misalignment
0%20%40%60%80%
100%
0% 20% 40% 60% 80% 100%
Axial misalignment (%)
Ang
ular
mis
alig
nmen
t
(%)
Disallineamento ammissibile
Metaldrive coupling SA1 and SA2
0200400600800
100012001400
0 500 1000 1500 2000 2500 3000 3500 4000
Shaft distance (mm)
Spee
d (r
pm)
Metaldrive coupling fully machined
0500
100015002000250030003500
200 300 400 500 600 700 800
Shaft distance (mm)
Spee
d (r
pm)
Giunto Metaldrive serie SA1 e SA2
Spaziatore (mm)
Velo
cità
di r
otaz
ione
(rpm
)
Velo
cità
di r
otaz
ione
(rpm
)
Spaziatore (mm)
Equilibratura non richiesta Equilibratura non richiesta
Giunto Metaldrive con lavorazione
®®
®®
No balancing required No balancing required
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80Direct Drives
METALDRIVE® GMD type “S”
Standard version with single disc pack. The coupling allows axial and angular misalignment. No radial misalignment is allowed.
Size
Dimensions [mm] Screws
d max E M LM P L n° TypeTightening torqueMs [Nm]
32 32 80 45 40 8 88 6 M5 8,5
38 38 92 53 45 8 98 6 M5 8,5
45 45 112 64 45 10 100 6 M6 14
52 52 136 75 55 12 122 6 M8 35
65 65 162 92 65 13 143 6 M10 69
80 80 182 112 80 14 174 6 M10 69
90 90 206 130 80 15 175 6 M12 120
95 95 226 135 90 22 202 6 M14 190
110 110 252 155 100 25 225 6 M16 295
120 120 296 170 110 32 252 6 M24 1000
138 138 318 195 140 32 312 6 M24 1000
155 155 352 218 150 32 332 8 M24 1000
175 175 386 252 175 37 387 8 M27 1500
190 190 426 272 190 37 417 8 M30 2000
205 205 456 292 205 42 452 8 M33 2450
A
A
SEZIONE A-A
d
L
LM P LM
Ø E M
ØØ
Order form
GMD MF16
GMD: METALDRIVE® hub
M: solid standard hubPL: Disc packF…: bore diameter
Hub/Disc pack
Size
032
A
A
SEZIONE A-A
d
L
LM P LM
Ø E M
ØØ
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Direct Drives
METALDRIVE®
METALDRIVE® GMD type “DC”
Standard version with double disc pack and standard length spacer.
P5Ø
E
ØM
ØM1
LMLM
L5
Ød1
ØdØ
E
ØM1
L4
P4LMLM
Ød1
ØM1Ø
E
ØM
L3
LM P3 LM
Ød1
Ød
LMLM P2
ØM
ØE
L2
Ød
ØM
ØE
P1 LMLM
L1
Ød
Versione GLDCC1MRVersione GLDC2MR
Versione GLDC1MRVersione GLDCCVersione GLDCL
Versione GLDCL
Size
Dimensions [mm]
d max E M LM
DCL DCC
M1 d1
DC1MR DC2MR DCC1MR
P1 L1 P2 L2 P3 L3 P4 L4 P5 L5
32 32 80 45 40 69 149 45 125 35 25 36 116 3 83 12 92
38 38 92 53 45 79 169 50 140 43 30 41 131 3 93 12 102
45 45 112 64 45 79 169 52 142 54 38 41 131 3 93 14 104
52 52 136 75 55 95 205 62 172 65 45 49 159 3 113 16 126
65 65 162 92 65 116 246 73 203 82 60 60 190 4 134 17 147
80 80 182 112 80 140 300 86 246 99 70 72 232 4 164 18 178
90 90 206 130 80 142 302 87 247 114 80 74 234 6 166 19 179
95 95 226 135 90 160 340 103 283 119 85 83 263 6 186 26 206
110 110 252 155 100 176 376 114 314 135 95 91 291 6 206 29 229
120 120 296 170 110 194 414 135 355 150 105 100 320 6 226 41 257
138 138 318 195 140 248 528 157 437 170 125 128 408 8 288 37 317
155 155 352 218 150 264 564 163 463 180 130 136 436 8 308 35 337
175 175 386 252 175 306 656 191 541 210 150 158 508 10 360 43 393
190 190 426 272 190 330 710 203 583 230 170 170 550 10 390 43 423
205 205 456 292 205 356 766 220 630 235 175 184 594 12 422 48 458
DCL type
DCC1MR type
DCC type
DC2MR type
DC1MR type
Hub configurator
Hubs Short Spacer CC Long Spacer CL
2 standard hubs
1 standard huband
1 reversed hub
2 reversed hub -
DCC
DCC1MR
DCL
DC1MR
DC2MR
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82Direct Drives
METALDRIVE® GMD type “SA1” - “SA2”
Metaldrive coupling with intermediate shaft is available in two versions:
SA1: Tubular Shaft version. Shaft is available in various lengths and can be delivered in welded aluminum or steel.SA2: Solid shaft construction. Shaft is available in various lengths.
Size
Dimensions [mm]
d max E M LM P L
32 32 80 45 40
Shaft lengths on request
P+ 80
38 38 92 53 45 P+ 90
45 45 112 64 45 P+ 90
52 52 136 75 55 P+ 110
65 65 162 92 65 P+ 130
80 80 182 112 80 P+ 160
90 90 206 130 80 P+ 160
95 95 226 135 90 P+ 180
110 110 252 155 100 P+ 200
120 120 296 170 110 P+ 220
138 138 318 195 140 P+ 280
155 155 352 218 150 P+ 300
175 175 386 252 175 P+350
190 190 426 272 190 P+ 380
205 205 456 292 205 P+ 410
L
L
K
K
LMPLM
ØE
L
ØMØ
d
L
ØE
ØM
LM P LM
Ød
Versione GLSA2
Versione GLSA1
Coupling configurator
Coupling code Item Type Execution Bore diameter Order example
GMDL032
Hub 1 GMD S F… GMD032MF30
(SA1 o SA2) type and distance between two side shaft Length P
SA1 P = 1200 mm
Hub 2 GMD S F… GMD032MF25
L
L
K
K
LMPLM
ØE
L
ØMØ
d
L
ØE
ØM
LM P LM
Ød
Versione GLSA2
Versione GLSA1
L
L
K
K
LMPLM
ØE
L
ØMØ
d
L
ØE
ØM
LM P LM
Ød
Versione GLSA2
Versione GLSA1L
L
K
K
LMPLM
ØE
L
ØMØ
d
L
ØE
ØM
LM P LM
Ød
Versione GLSA2
Versione GLSA1
SA1 SA2
SA1
SA2
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Direct Drives
METALDRIVE®
METALDRIVE® GMD type “DCA” (API671-API610)
Standard version with double disc pack and standard length spacer. Double disc pack execution with anti-fail device. Variousspacer lengths available for pump applications. Conforms to API610 - API671.
ME
P1/P2
LfLf
L1/L2
Ldc1/Ldc2 P C
LMLMdm
ax
idmax
L1/L2
Lf
P1/P2
Lf
d1m
ax E
Ldc1/Ldc2 P C
d1m
ax
LMLM
i
ME
L1/L2
d1m
ax
P1/P2
Lf Ldc1/Ldc2 P C Lf
LMLM
i dmax
Versione GMD-DCA2MP Versione GMD-DCA2MG Versione GMD-DCAMPMG
Size
Dimensions [mm]
E M Lf P LM C i Ldc1 Ldc2 P1 P2 L1 L2 d max. d1 max.
32 80 45 38,5 8 40 19 60 29 53 80 104 160 184 32 48
38 92 53 43,5 8 45 21,5 70 34 63 90 119 180 209 38 55
45 112 64 43,5 10 45 20,5 85 32 59 90 117 180 207 45 75
52 136 75 53,5 12 55 20,5 100 38 71 100 133 210 243 52 92
65 162 92 63,5 13 65 25 120 47 90 120 163 250 293 65 105
80 182 112 78 14 80 29 140 58 112 140 194 300 354 80 120
90 206 130 78 15 80 28,5 160 57 112 140 195 300 355 90 135
95 226 135 88 22 90 30,5 175 59 116 160 217 340 397 95 -
110 252 155 98 25 100 35 200 64 126 180 242 380 442 110 -
120 296 170 108 32 110 44,5 225 71 130 220 279 440 499 120 -
138 318 195 137 32 140 54,5 250 93 184 260 351 540 631 138 -
155 352 218 147 32 150 61,5 274 99 200 280 381 580 681 155 -
175 386 252 172 37 175 62,5 308 117 232 310 425 660 775 175 -
190 426 272 186 37 190 72,5 335 129 256 340 467 720 847 190 -
205 456 292 201 42 205 79 360 136 272 370 506 780 916 205 -
API671
DCA2MP DCA2MG DCAMPMG
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84Direct Drives
Hub-shaft connections
Shrink disc executionsB
B
D
D
SEZIONE D-D SCALA 1 : 1.15
E
E
Con viti di serraggio dall'esterno Con viti di serraggio dall'interno Con calettatore SIT-LOCK ® 11S.1
SEZIONE C-C
Ø P
Ø d
t
C
C
SEZIONE B-B
Ø P
tØ
d
B
B
Posizione del grano di fissaggiodal tipo 65
Posizione del grano di fissaggiofino a tipo 52
Sized max[mm]
Pt
[mm]
Setscrew tightening torque
Ms [Nm]
32 32 M6 15 4,8
38 38 M6 15 4,8
45 45 M8 20 10
52 52 M8 20 10
65 65 M8 20 10
80 80 M10 20 17
90 90 M12 25 40
95 95 M12 30 40
110 110 M12 30 40
120 120 M12 30 40
138 138
on request155 155
175 175
190 190
205 205
keyway hub
A
A
Split collar design
up to size 52 from size 65
Shrink disc hub E Shrink disc hub I With SIT-LOCK 11S
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Direct Drives
METALDRIVE®
Selection procedure
Definitions
TKmax = peak torque capacity for a maximum of 105 times [Nm]TKn = torque transmissible by the coupling at the maximum RPM with the allowable misalignments [Nm]TKW = maximum torque variation allowable by the coupling from the nominal torque TKN with a frequency of 10 Hz [Nm]
Coupling selection
- Calculate the nominal torque to be transmitted:
TN = nominal torque of the machine [Nm]P = input power (kW)n = RPM (1/min)
- Verify coupling nominal torque TKN:
TKn ≥ TN • k
k = service factor
- Verify coupling maximum torque with machine peak and starting torque. It is allowed up to 5 peaks or start up per hour:
TKmax ≥ TS
TS = starting or peak torque [Nm]
- In case of direct start with AC motor, it is important to consider driver and driven inertias. In case of transmission with torqueinversion, the maximum torque variation TW should not be higher than the maximum coupling torque TKW.
TKW ≥TW
- Verify working conditions.
Particularly maximum speed must not exceed the permissible value. Dynamic balancing (optional) allows higher speeds. Permissible speed could be limited by the weight and critical speed of spacers. Please consult with our technical department.
SERVOPLUS
LA
AA JJ
Jm
+=
LA
LL JJ
Jm
+=
[ ]°⋅π⋅=β
T
AS
CT180
METALDRIVE / SITEX ST
TS
1
TL
T
CP2P
C2
1C −+
=
nP9550
TN
⋅=
%100%100kk
%100kk
%100kk
w
wM
r
rM
a
aM <⋅∆∆+⋅
∆∆+⋅
∆∆
HM
MUMU
UMHHH
UMUUM
UMM
CompressorsPiston compressorsTurbo compressorsBlowers, VentilatorsRotary piston blowersBlowers (axial / radial)Cooling tower fansTurbo blowersPumpsCentrifugal pumps (low viscosity liquid)Centrifugal pumps (viscous liquid)Piston pumpsPlunger pumpsPressure pumpsFood industry machineryBottling and container fillingCane crushers, knives, millsBread machinesPackaging machinesSugar beet machinesChemical industryAgitators (liquid material)Agitators (semi-liquid materialCentrifuges (heavy)
UMM
MMM
HMM
UMH
MM
HMHU
Centrifuges (light)DrumsMixersBuilding machineryConcrete mixersHoistsRoad construction machineryGenerators, transformersFrequency transformersGeneratorsWelding generatorsCranesHoistingSlewingTravellingLaundry machinesTumblersWashing machinesWood working machinesBarkersPlanning machinesSaw framesWood working machines
HHHH
HHHHHMHHHUMHHHM
Marble, clay, and stone working machinesMillsBreakersBrick pressesOvens (rotary)Metal rolling millsCold rolling millsCasting plants (continuous)Heavy and medium plate millsManipulatorsRoller tables (heavy)Roller tables (light)Sheet millsForging pressesHammersMachine tools, auxiliary driveMachine tools, main drivesMetal planning machinesPlate straightening machinePressesSheet metal bending machines
Service factor k and load classification
Driver machine
Driver machine load class
U M H
Electric motor, turbine, hydraulic motor 1,1 1,5 2
Piston engines with more than 3 cylinders 1,5 1,7 2,3
Piston engines up to 3 cylinders 1,7 2 2,6
U = uniform loadM = medium frequency peak load H = high frequency peak load
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86Direct Drives
METALDRIVE® couplings weight and inertia
Size 95 -138
Size 155 - 205
Size 32 - 90Type 32 - 90
Type 95 - 138
Type 155 - 205
Disc pack executions
Size
Component Complete coupling
Hub with max bore Spacer GMD type DCDisc pack
GMD type Shub with max
bore
GMD type DCLhub with max
bore
GMD type DCChub with max
bore
GMD typeDC1MR
hub with maxbore
GMD type 2MRhub with max
bore
GMD typeDCC1MR
hub with maxboreHub M Hub M1 Type P1 Type P2
Weight
kg
Mom
ent of
inertia kg
xm2
Weight
kg
Mom
ent of
inertia kg
xm2
Weight
kg
Mom
ent of
inertia kg
xm2
Weight
kg
Mom
ent of
inertia kg
xm2
Weight
kg
Mom
ent of
inertia kg
xm2
Weight
kg
Mom
ent of
inertia kg
xm2
Weight
kg
Mom
ent of
inertia kg
xm2
Weight
kg
Mom
ent of
inertia kg
xm2
Weight
kg
Mom
ent of
inertia kg
xm2
Weight
kg
Mom
ent of
inertia kg
xm2
Weight
kg
Mom
ent of
inertia kg
xm2
3238455265809095110120138155175190205
0,380,570,861,572,54,35,97,210,314,422,629,8646,359,974
0,0002530,000490,00110,00290,00640,01470,0260,0370,0680,1250,2320,380,731,141,63
0,320,50,761,222,13,875,16,49,213,118,924,7337,747,757
0,000210,00040,000920,00240,00550,01260,0210,0320,0570,110,190,30,550,881,21
0,520,710,971,72,44
5,46,810
13,721,332,146,959,985
0,000420,000810,00160,00440,0090,020,0330,050,090,170,30,540,971,532,36
0,420,580,821,52,13,44,45,88,311,817,425
35,74764
0,000380,00070,00150,00410,00820,0180,030,0450,080,160,270,460,811,321,98
0,0780,0940,1830,310,450,560,751,72,44,95,46,19,311
15,3
0,0000340,0001090,000310,000760,00150,00240,00420,0120,0220,0580,0780,1130,2150,30,48
0,81,21,93,55,59,212,616,123
33,750,665,8101,9130,8163,3
0,00050,00110,00250,00660,01430,03180,05620,0860,1580,3080,5420,8731,6752,583,74
1,42
3,15,58,313,718,724,635,452,377,3104
158,1201,7263,6
0,0010,0020,00440,01170,02480,05420,09340,1480,270,5360,921,5262,864,416,58
1,31,93
5,38
13,117,723,633,750,473,496,9146,9188,8242,6
0,0010,00190,00430,01140,0240,05220,09040,1430,260,5260,891,4462,74,26,2
1,31,93
5,27,913,317,923,834,351
73,698,9149,5189,5246,6
0,0010,00190,00420,01120,02390,05210,08840,1430,2590,5210,8781,4462,684,156,16
1,21,82,94,97,512,917,123
33,249,769,993,8140,9177,3229,6
0,0010,00180,0040,01070,0230,05
0,08340,1380,2480,5060,8361,3662,53,895,74
1,21,82,95
7,612,716,922,832,649,169,791,8138,3176,6225,6
0,0010,00180,00410,01090,02310,05010,08540,1380,2490,5110,8481,3662,523,945,78
NoteValues for hubs refer to maximum bore execution. Values for disc packs include bolts.
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Direct Drives
METALDRIVE®
Installation and maintenance
METALDRIVE® couplings come standard unassembled (unlessordered to be assembled).When mounting the coupling, it is important to follow thespecific recommendations.Due to the modular design of the METALDRIVE® coupling,single parts can be replaced. For optimum performance allcomponents must be in perfect conditions.
METALDRIVE® couplings are designed for horizontal mounting.In case of vertical mounting, the coupling weight must besupported.
• Carefully clean bores, shaft ends and the flange where thescrews are positioned
• Position the hubs on the shafts of the machines. Hub facesmust be flush with shaft end. Introduce setscrew and tightenproperly
• Position the driver and driven unit to be connected
• Carefully align the shafts to be connected. Proper initialalignment allows misalignments during motion and ensurestransmission durability. It is therefore suggested to check shaftalignments with an indicator before the machine start up.
• Mount the disc pack with screws and nuts. Tighten to torqueMS holding the screws and turning the nuts.
• Install the spacer between the hubs and connect it to thealready assembled disc pack with screws and nuts (in caseof long spacer, it is important to support the spacer). Tightento torque Ms holding the screws still and turning the nuts
• Check shaft alignment again.
In case hubs are machined by the user, it is recommended toask for correct concentricity and perpendicularity toleranceswhich could affect coupling life.
There is no need for lubrication.
SizeMs
[Nm]
32 12
38 13
45 22
52 39
65 85
80 105
90 127
95 260
110 480
120 760
138 780
155 800
175 1100
190 1500
205 2600
Safety norms
All rotating parts must be protected against any possibility of contact with people.Protection must be designed so that even in case of coupling break, no damage can be done to people and equipment.
Metaldrive® with vertical assembling
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