roller chain flexible couplings
TRANSCRIPT
ROLLER CHAINFLEXIBLE COUPLINGS
SELECTION OF THE SIZE OF THE COUPLINGS
1. Decide service factor for the unit to which the chain coupling is to be fitted by considering the hours of service, type of power unit etc. from the following table :-
Service
classification
Driven equipment
Kinds Characteristics
Source of power
Electric motor or steam turbine
Steam orgasoline
engine 4 or more cyl.
Diesel or GasEngine
A
B
C
Centrifugal fans, blowers of pumps conveyor
evenly loaded.
Compressor, conveyor, pulsating load machines,
kilns and driers, speeds reducers, Multi cylinder
pumps, wood working machines, etc.
Presses, crushers, impact loads, Oil well
pumping equipment.
Even load - 8 hours/day service,
Non-reversing-low torque starting.
Uneven load - 8 hours/day service, Moderate shock or torsional loads, Non-reversing - This is the most common type of service.
Heavy shock load - 8 hours / day service, High peak torsional loads. Reversing under load, Full load starting.
1 1.5 2.0
1.5 2.0 2.5
2.0 2.5 3.0
For 8 to 16 hrs/day service use next step service factor.
For 16 to 24 hours/day service use service factor two step higher loading.
2. Multiply horsepower of driver unit by the service factor. This is design horsepower.
3. Note the maximum rpm. at which the unit will run and its shaft diameter.
4. From H.P. rating table select the coupling size which is rated equal to or slightly greater than design H.P. required at the rpm. at which the
coupling is to operate.
5. Also make sure that the diameter at the shaft is less than the maximum bore permissible on the coupling. If the coupling is not large enough to
accommodate the shaft size, use the next coupling which can be bored to suit the shaft requirement.
Large size chain coupling used in heavy drives
A series of chain couplings in steel tube mill.
B-1-C-13, BHOSARI INDUSTRIAL ESTATE, P.B. NO. 14, PUNE - 411 026 (INDIA) l TEL. : 27120103, 27120104l E-mail : [email protected] l Website : www.nuteckcouplings.com
NU-TECK COUPLINGS PVT. LTD.Manufactured & Marketed by :
EASY TO ASSEMBLE.
OR DIS-ASSEMBLE.
ALL TEETH HARDENED-
HUBS AND BORES.
REMAIN SOFT TO PERMIT
REWORKING.
POSITIVE-YET FLEXIBLE.
MAXIMUM FLEXIBILITY.
MINIMUM BACKLASH.
CONSTANT POWER
TRANSMISSION.
ECONOMICAL.
DURABLE.
COMPACT.
EASY OFF/ON.
B
A
COUPLING No. ASA No. A B Wt. Kg.
NU-TECK ROLLER CHAINFLEXIBLE COUPLINGSNU-TECK Roller Chain Flexible Couplings are compact, all
steel, long lasting flexible couplings, & capable of transmitting
relatively high torques with minimum space consumption.
Consequently, they provide the most economical means of
positive transmission of power from one shaft to another.
The simple design and construction of these couplings make
them extremely easy to install and disconnect.
The sprockets are identical in construction, thus providing a
balanced unit in operation and reducing effects of vibration. In
addition, the flexibility of roller chain plus clearance between the
chain rollers and sprocket teeth allow for slight misalignment and
shaft end float.
Stock couplings sizes usually meet most power transmission
requirements. However when necessary special couplings can
be furnished on a made to order basis to suit a particular
application. In such cases, complete information should be given
when requesting a recommendation or quotation. This includes
horsepower and RPM requirements, hub dimensions, bore and
keyway sizes, and general operating conditions.
NT 6112
NT 8312
NT 8316
NT 1016
NT 1018
NT 1218
NT 1222
NT 1618
NT 1622
NT 2020
NT 2418
NT 2422
NT 3218
3812
4012
4016
5016
5018
6018
6022
8018
8022
10020
12018
12022
16018
69
75
90
114
123
149
173
195
222
258
292
340
385
59
68
70
86
90
93
110
135
134
174
218
212
250
0.2
0.2
0.4
0.6
0.8
1.2
1.6
2.3
2.4
3.4
5.9
7.3
14
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PLASTIC / ALUMINIUM COVERS FOR NU-TECK ROLLER CHAIN COUPLINGS
LUBRICATIONl Couplings operating with covers should be kept filled with a good quality ball bearing grease of soft or medium consistency
l Couplings operating without covers under fairly clean conditions will give satisfactory service provided they are periodically (weekly) brushed thoroughly with ball bearing grease of medium consistency.
COUPLINGNO.
NT 6112NT 8312NT 8316NT 1016NT 1018NT 1218NT 1222NT 1618NT 1622NT 2020NT 2418NT 2422NT 3218NT 3222NT 4018NT 4022
381240124016501650186018602280188022
10020120181202216018160222001820022
EQUIASA
NO.
MAXBORE
162232424860768095110119150160199205260
1
0.0130.0260.0530.1060.1330.2400.3330.5460.7861.2401.8662.4134.0405.9068.08010.17
5
0.0660.1460.2800.5200.6661.2401.6662.7603.9466.2139.36012.0920.1329.4640.4050.93
10
0.1460.2930.5461.0401.3202.4933.3465.5207.90612.4418.6624.1340.4059.0680.80
101.73
25
0.3460.7731.3732.6003.3066.2268.41313.7319.7331.0646.8060.40
101.06146.66201.33254.66
50
0.6931.5332.7465.2136.60012.4416.6627.6039.4662.1393.60120.93201.33294.66404.00509.33
100
1.0532.3064.1207.8139.90618.6625.0641.3359.3393.33140.0181.33302.66444.00605.33762.66
200
1.6133.5066.25311.8915.0628.4038.1362.9389.60141.33213.33274.66460.0674.66921.331161.33
300
2.1064.6138.22615.6019.8637.3350.2682.80118.66166.66280.0362.66606.66886.681212.01520.0
400
2.5205.5339.88018.8023.7344.8060.4099.33
141.33224.0336.0
434.66728.0
1065.31453.31826.6
500
3.0136.61311.8022.4028.4053.4672.13118.66169.33266.66402.6520.0869.331272.01733.32186.6
600
3.4407.56013.4625.6032.5361.2082.53
134.66194.66305.33460.0
594.66994.661453.31986.62506.6
800
4.2539.34616.6631.7340.1375.73102.0168.0240.0377.33568.0734.661229.31800.02453.3
1000
5.17311.3820.4038.5348.8092.13
124.13204.0292.0460.0692.0
894.661496.02186.6
1200
5.88012.9023.0643.8655.46
104.53140.0232.0332.0
522.66786.861016.0
1500
7.13315.4628.0053.20
66.733126.93170.66281.33402.6
634.66954.66
1800
8.33318.2632.5361.8678.40148.0
198.66328.0
469.33738.66
2000
8.97319.7335.0666.6684.53160.0214.66353.33505.33
2500
10.8223.5642.5380.80
102.40193.33260.0
3000
12.5827.6049.3393.86118.13
3600
14.6632.1357.33
108.80
4000
16.0035.0662.53
4800
18.8641.0673.20
5200
19.73
6000
22.26
REVOLUTION PER MINUTE
H. P. RATINGS.
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NU-TECK ROLLER CHAINFLEXIBLE COUPLINGS INSTALLATION
Installation 1. Place the Rubber Ring on either the left or right sprocket. (Place the Rubber Ring on upper side sprocket when vertical use.)
2. Bring the sprocket faces close together and correct the angular and offset misalignment.
Adjust the angular misalignment (a) so that the dimension "X" is the same around the circumference of the sprockets. The allowable angular misalignment (a) is 1°.
Place a straight edge at the bottom of the corresponding teeth of the two sprockets and adjust in order to minimize the offset misalignment. The allowable offset misalignment(e) is 2% of the chain pitch.When the sprocket speed is 1/3 or more of the maximum speed. The allowable angular and offset misalignment are 0.5° and 1% of the chain pitch.
x
3. Measure the distance "W" between the sprocket faces and firmly fasten the set bolt (refer to the table of dimensions).
4. Fill the grease into the space "W" and lubricate the chain and teeth with grease, then wrap the chain around both sprockets and fix with the joint pin. Insert the joint pin from oil seal side and confirm that the clip or cotter pin is securely fastened at counter
oil seal side.
5. Fill the required quantity of grease into both sides of the casing and fasten them firmly. There will be slight leakage during initial operation, but this will soon stop. If the grease still leaks, check the conditions of installation.
W
Rubber Ring
Sprocket
OUR OTHER RANGE OF POWER TRANSMISSION PRODUCTS.
SprocketsTorque Limiter Flexible Gear Coupling Torque Limiter Coupling
COUPLING
NO.
ASA
No.
BORE
MIN MAX T t W C D Wt.Kg.
NT 6112
NT 8312
NT 8316
NT 1016
NT 1018
NT 1218
NT 1222
3812
4012
4016
5016
5018
6018
6022
10.00
10.00
12.00
16
16
20
20
65
79
79
96
98
121
121
30
36
36
44
45
56
56
5.0
7.0
7.0
8.0
8.0
9.0
9.0
27
35
50
61
71
88
110
16
22
32
42
48
60
76
45
60
77
96
106
126
150
0.30
0.80
1.60
2.60
3.50
6.5
10.0
COUPLING
NO.
ASA
No.
BORE
MIN MAX T t W C D Wt.Kg.
NT 1618
NT 1622
NT 2020
NT 2418
NT 2422
NT 3218
NT 3222
NT 4018
NT 4022
8018
8022
10020
12018
12022
16018
16022
20018
20022
25
25
40
50
50
50
50
60
60
80
95
110
119
150
160
199
205
260
150
150
200
260
260
360
360
517
517
67
67
91
118
118
165
165
240
240
16
16
18
24
24
30
30
37
37
115
140
157
169
208
220
280
295
373
170
201
231
254
301
341
410
425
507
14.5
20.0
33.5
51.0
76.0
121.0
210.0
320.0
470.0
NU-TECK Roller ChainFlexible Couplings
C
T
D
W t
NU-TECK COUPLINGS PVT. LTD.REGD. OFFICE & WORKS : B-1-C-13, BHOSARI INDUSTRIAL ESTATE, P.B. NO. 14, PUNE - 411 026 (INDIA)
l TEL. : 27120103, 27120104 l E-mail : [email protected] l Website : www.nuteckcouplings.com
Manufactured & Marketed by :
OUR STOCKISTSl AHMEDABAD : RAKESH ENTERPRISES : L - 453, GIDC Estate, Odhav, Ahmedabad - 382 415 Tel. : 079-22870088, 22870085 E-mail : [email protected]
l DELHI : DEL-JAYESS INDUSTRIAL SERVICES : 5574-A/17 & Kansiram Market, New Chandrawal, (Opp. 18 F Kamalanagar) Delhi - 110 007 Tel. : 011-23858804, Telefax : 23856823 E-mail : [email protected]
l SECUNDERABAD : COMMERCIAL ENGINEERING CORPORATION : 3 Aziz Mansion 5-5-83 Raniganj, Secunderabad - 500 003. Tel. : 040-27714574, 27710272 E-mail : [email protected]
l CHENNAI : SHREE SYSTEM ENTERPRISES : "Shubhshree" H-26, Central Avenue, Korattur, Chennai-600 080 Tel : 044-26257205, 26252219 Fax : 044-26357379 E-mail : [email protected]
l ALLAHABAD : HYDROMECH ENGINEERS : A-108, Govindpur Colony, Allahabad - 211004 Tel.: 0532-2540579, 09452061080, 9415547903 E-mail : [email protected], [email protected]
l MUMBAI : DEEPAK ENTERPRISES : Karmastambh, Unit No. G-D-8, Ground Floor, L.B.S. Marg, Vikhroli (W) Mumbai - 400 083 Tel. : 022-25770706 Fax : 25702975 E-mail : [email protected]
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