Torque limiter is a protective device that limits torque transmitted in a drive system by slipping when torque demand exceeds a preset value as a result of shock loads, over loads, or machine jams. It automatically reengages when the over load torque has passed, no resetting is required. TheTorque limiter prevents machine damage and eliminates costly downtime. TheTorque limiter utilizes spring loaded friction surfaces for its operations; slip torque is preset by adjustment of the spring force. The Torque limiter can be used with a sprocket, gear, sheave or flange plate as a center member that is clamped between two friction facings.
Product Description
Chain Couplings are compact, all steel, long lasting flexible couplings, capable of transmitting relatively high torques with minimum of space consumption. Consequently, they provide a 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, providing additional economy of operation. 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 will 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.
Capacities & Dimensions
| TORQUE LIMITER SIZE | TORQUE CAPACITY (KG. M.) | PILOT MIN. BORE | MAX. BORE | APPROX Wt. Kg | A | B | C | D | M. MAX. | 'F' SPROCKET BORE DIA. OVER BUSHING | |
| MIN. | MAX. | ||||||||||
| 50-1 | 0.3 | 1.5 | 8.0 | 14 | 0.3 | 50 | 29 | 24 | 4 | 7.2 | 30.10 |
| 50-2 | 0.6 | 2.5 | 8.0 | 14 | 0.3 | 50 | 29 | 24 | 6.5 | 7.2 | 30.10 |
| 65-1 | 0.7 | 2.8 | 10.0 | 22 | 0.5 | 65 | 50 | 35 | 15 | 8.8 | 41.40 |
| 65-2 | 1.4 | 5.5 | 10.0 | 22 | 0.5 | 65 | 50 | 35 | 15 | 8.8 | 41.40 |
| 90-1 | 2.0 | 7.0 | 12.0 | 28 | 1.5 | 90 | 65 | 45 | 18 | 16.0 | 52.00 |
| 90-2 | 3.5 | 14.0 | 12.0 | 28 | 1.5 | 90 | 65 | 45 | 18 | 16.0 | 52.00 |
| 125-1 | 5.0 | 18.0 | 16.0 | 38 | 3.5 | 125 | 78 | 60 | 23 | 16.0 | 70.00 |
| 125-2 | 6.5 | 36.0 | 16.0 | 38 | 3.5 | 125 | 78 | 60 | 23 | 16.0 | 70.00 |
| 150-1 | 7.5 | 44.0 | 20.0 | 42 | 5.5 | 150 | 90 | 70 | 26 | 23.0 | 80.00 |
| 150-2 | 9.0 | 61.0 | 20.0 | 42 | 5.5 | 150 | 90 | 70 | 26 | 23.0 | 80.00 |
| 180-1 | 11.0 | 58.0 | 25.0 | 64 | 10.0 | 180 | 110 | 100 | 28 | 28.5 | 110.00 |
| 180-2 | 20.0 | 110.0 | 25.0 | 64 | 10.0 | 180 | 110 | 100 | 28 | 28.5 | 110.00 |
| 225-1 | 22.0 | 140.0 | 25.0 | 92 | 20.0 | 230 | 120 | 140 | 33 | 28.5 | 152.00 |
| 225-2 | 40.0 | 175.0 | 25.0 | 92 | 20.0 | 230 | 120 | 140 | 33 | 28.5 | 152.00 |
Minimum size Sprockets to fit on Torque Limiters
| TL 50 | TL 65 | TL 90 | TL 125 | TL 150 | TL 180 | TL 225 |
| 6B 20T | 6B 25T | 6B 33T | 8B 35T | 8B 42T | 8B 48T | 8B 60T |
| 8B 16T | 8B 20T | 8B 30T | 10B 30T | 10B 34T | 10B 39T | 10B 50T |
| 10B 14T | 10B 16T | 10B 21T | 12B 25T | 12B 30T | 12B 33T | 12B 33T |
| 12B 19T | 16B 19T | 16B 22T | 16B 26T | 16B 26T | ||
| 16B 15T | 20B 19T | 20B 21T | 20B 32T | |||
| 24B 17T | 24B 18T | 24B 23T |
BVCHAINS Offers a Torque Limiter coupling in 14 sizes. This device consists of a stock Torque Limiter and a roller chain type coupling. The Torque Limiter coupling combines overload slip-protection with the ability to couple driving and driven shafts. It is an assembly consisting of a standard Toque Limiter and a roller chain coupling. A stock ground plate sprocket serves as the center member of the Torque Limiter, and it is coupled to a sprocket by an I.S. double strand roller chain which is easily connected by a standard connecting link. This construction provides a dependable and easy-to-assembleflexible Coupling having shaft misalignment compensation.
| Misalignment | Torque capacity Kg. m. | Stock Min. Plain Bore | Max. Bore | Dimensions (mm) | Approx. wt. | ||||||||||
| Catalogue No. | Max.Parallel | Max.Angular | Min. | Max. | Cplg. Spkt (mm) | Torque Limiter | Cplg. Spkt (mm) | Torque Limiter (mm) | A | B | C | D | E | F | Kgs. |
| 50-1 C 5 0 - 2 C |
0.2 | 1/2° | 0.3
0.6 |
1.5 2.5 | 10 | 8 | 28 | 14 | 53 | 77 | 50 | 17 | 29 | 2 | 1.0 |
| 65-1 C 65 - 2 C |
0.25 | 1/2° | 0.7 1.4 |
2.8 5.6 | 10 | 10 | 48 | 22 | 78 | 100 | 74 | 30 | 50 | 3 | 2.0 |
| 90-1 C 90 - 2 C |
0.30 | 1/2° | 2.0 3.5 |
7.0 14.0 | 19 | 12 | 56 | 28 | 107 | 136 | 100 | 45 | 65 | 3 | 6.50 |
| 125-1 C 125-2 C |
0.38 | 1/2° | 5.0 6.5 |
18.0 36.0 | 22 | 16 | 70 | 38 | 122 | 185 | 145 | 48 | 78 | 3 | 13.0 |
| 150-1 C 150-2 C |
0.38 | 1/2° | 7.5 9.0 |
44.0 61.0 | 25 | 20 | 90 | 42 | 141 | 214 | 168 | 48 | 90 | 3 | 21.0 |
| 180-1 C 180-2 C |
0.50 | 1/2° | 11.0 22.0 |
58.0 110.0 | 25 | 25 | 100 | 64 | 173 | 247 | 195 | 62 | 110 | 3 | 34.0 |
| 225-1C 225-2C |
0.50 | 1/2° | 20.0 40.0 |
140.0 175.0 | 40 | 25 | 160 | 92 | 204 | 309 | 244 | 82 | 120 | 3 | 65.0 |