A Guide To Finding The Right Twin Disc® and WPT Power® PTO Clutches For Your Application
Need help sizing a Twin Disc® or WPT Power PTO®? Do you find Twin Disc PTO Model Numbers confusing? The chart below will help you. Since many WPT Power components were designed to replace Twin Disc parts, knowing your Twin Disc information lets us find either OEM Twin Disc or WPT Power replacement parts that we find to be of the same or better quality, more readily available and more cost effective. The first column “PTO Model Number” lists the common Twin Disc power takeoff model components that in practice reflect the number of clutch plates and clutch size (ex: “SP111” has one eleven inch disc while the SP211 has two eleven inch friction discs). In other words, Twin Disc PTO part numbers are based on the physical size of the PTO and its internal components.
| Specifications | Application Duty Classification | |||||
| Class 1 | Clutch Maximum HP Rating see note 2 |
|||||
| PTO Model Number |
Available. Sizes SAE |
Max. Input Torque Lb. Ft. |
Class II | Class III | Class IV | Approx. Weight in LBS. |
| C-106SP C-107SP C-108SP C-110SP C-111SP |
6,5,4 6,5,4 5,4,3 4,3,2,1 4,3,2,1 |
159 175 230 328 387 |
40 54 61 96 124 |
27 36 41 64 82 |
20 27 31 48 62 |
53 65 72 115 120 |
| SP-11P SP-111HP SP-111OP |
3,2,1 3,2,1 3,2 |
455 | 124 | 82 | 62 | 129 141 145 |
| SP-211HP SP-211OP |
3,2,1 2,1 |
909 | 247 | 165 | 124 | 155 175 |
| SP-311P | 2,3 | 1620 | 371 | 247 | 186 | 220 |
| SP-114P | 1,0 | 810 | 188 | 125 | 94 | 260 |
| SP-214P SP214OP |
1,0 | 1620 | 376 | 251 | 188 | 328 340 |
| IBF-240OP IBF-214OP |
1,0 | 1620 | 395 | 264 | 197 | 470 |
| SP-314HP SP-314HP |
1,0 | 2430 | 564 | 376 | 282 | 408 |
| IBF-314OP IBF-314OP IBF-314OP |
1,0 | 3040 | 7413 | 494 | 3713 | 595 |
| SP-218OP SP-218OP |
0,00 | 4000 | 622 | 415 | 311 | 660 |
| SP-318P | 0 | 6000 | 933 | 622 | 467 | 700 |
| IBF-318OPIBF-318OP
IBF-318OP |
0 | 7500 | 12243 | 8163 | 6123 | 920 |
| SP-321P IBF-321OP |
0,0 0,0 |
6730 8400 |
1270 16673 |
847 11113 |
635 8343 |
1110 121 |
The first digit in the alphanumerical Twin Disc model number is the number of clutch plates. The next two digits of the Twin Disc model number is the general friction disc size in inches (i.e. an “eleven” inch disc actually measures 11.5″ from tooth groove to opposite tooth groove, but it is generally referred to as an “eleven inch disc”). Putting this together, a Twin Disc Model C106SP is a single plate, 6″ clutch. The next column lists the available power takeoffs by SAE bell housing sizes. To continue our example, a Twin Disc Model C106HP5 has an SAE #5 housing. If you are rusty on SAE housing dimensions, take a look at our Tech Tip #41, SAE Bell Housings Made Easy!. The next column lists the maximum torque capacity that a particular clutch size will handle. The next two columns refer to SAE duty classifications for PTOs, and the last column gives the weight. Of course, if you need additional help deciphering your PTO numbers, see Tech Tip #93: What Do I Need To Find The Right Parts For My PTO Clutch?
We list some of the more popular clutch packs and PTO parts here on our website, but we stock even more in our warehouse to make sure our customers are up and running as quickly as possible. If you have any questions feel free to call us at 866-821-2387 or e-mail us at info@foleyengines.com .
Manufacturers names, symbols and numbers are for reference purposes only and do not imply manufacturing origin.
