Constant Tension Band Clamps
Note: All Dimensions are in Millimeters. Conforms to SAE spec. J1508.
| ROTOR CLAMP CTB NO (mm) | CASE QUANTITY min 1 case | WEIGHT PER M (lbs.) | WEIGHT PER CASE (lbs.) | D1 Free Dia. Max. (mm) | D2 FULL OPEN DIA. Min. (mm) | MATERIAL THICKNESS T 0.08 -0.02 | REFERENCE DIMENSIONS (All Sizes Listed In mm) |
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| A (mm) Tab Height | B (mm) Ear Length | C (mm) Ear Span | |||||||
| CTB-13 | 2500 | 8.5 | 21.250 | 12.0 | 14.2 | 0.70 | 7.3 | 11.7 | 27.0 |
| CTB-14 | 2500 | 10.2 | 25.500 | 13.5 | 15.3 | 0.80 | 8.0 | 12.5 | 30.0 |
| CTB-15 | 2500 | 9.35 | 23.375 | 13.9 | 16.8 | 0.70 | 7.2 | 11.9 | 31.0 |
| CTB-16 | 2500 | 12.87 | 32.175 | 14.4 | 17.2 | 1.00 | 6.6 | 10.8 | 28.5 |
| CTB-17 | 2500 | 10.8 | 27.000 | 15.2 | 18.5 | 0.85 | 7.3 | 12.5 | 32.0 |
| CTB-19 | 1800 | 20.3 | 36.540 | 17.8 | 20.0 | 1.30 | 10.4 | 12.0 | 35.0 |
| CTB-20 | 1700 | 21.4 | 36.380 | 18.4 | 21.6 | 1.30 | 9.1 | 12.1 | 32.0 |
| CTB-22 | 1500 | 23.2 | 34.755 | 20.5 | 24.5 | 1.30 | 8.5 | 12.5 | 36.0 |
| CTB-23 | 1000 | 27.5 | 27.500 | 21.0 | 24.7 | 1.50 | 8.1 | 12.9 | 39.0 |
| CTB-24 | 1250 | 24.0 | 29.975 | 22.0 | 26.0 | 1.30 | 8.1 | 12.7 | 36.0 |
| CTB-25 | 1000 | 29.5 | 29.500 | 23.5 | 26.8 | 1.50 | 9.3 | 12.4 | 34.0 |
| CTB-26 | 1000 | 31.9 | 31.900 | 24.3 | 28.0 | 1.60 | 10.0 | 12.6 | 34.0 |
| CTB-27 | 1000 | 33.6 | 33.570 | 25.2 | 28.9 | 1.60 | 10.1 | 12.5 | 38.0 |
| CTB-29 | 900 | 38.9 | 35.010 | 27.0 | 31.5 | 1.73 | 10.3 | 13.3 | 35.0 |
| CTB-30 | 900 | 38.2 | 34.380 | 28.0 | 32.5 | 1.73 | 11.4 | 13.4 | 41.0 |
| CTB-32 | 700 | 38.9 | 27.230 | 29.3 | 34.5 | 1.73 | 11.7 | 12.1 | 44.0 |
| CTB-35 | 700 | 44.2 | 30.940 | 31.5 | 38.0 | 1.73 | 11.1 | 15.0 | 50.0 |
| CTB-36 | 700 | 44.4 | 31.080 | 32.5 | 39.0 | 1.73 | 11.3 | 13.3 | 48.0 |
| CTB-38 | 600 | 47.5 | 28.500 | 34.5 | 41.5 | 1.73 | 10.2 | 15.1 | 52.0 |
| CTB-40 | 600 | 47.9 | 28.740 | 35.5 | 42.5 | 1.73 | 11.1 | 13.0 | 52.0 |
| CTB-42 | 500 | 54.0 | 27.000 | 37.2 | 44.5 | 1.90 | 10.6 | 14.7 | 52.0 |
| CTB-44 | 500 | 56.1 | 28.050 | 38.5 | 46.5 | 1.90 | 11.0 | 14.5 | 53.0 |
| CTB-46 | 500 | 61.4 | 30.675 | 40.5 | 48.5 | 2.00 | 11.5 | 14.4 | 55.0 |
| CTB-47 | 450 | 63.5 | 28.575 | 41.4 | 50.0 | 2.00 | 13.2 | 14.3 | 59.0 |
| CTB-50 | 450 | 67.1 | 30.195 | 43.5 | 53.0 | 2.00 | 11.3 | 14.4 | 59.0 |
| CTB-51 | 350 | 67.4 | 23.590 | 44.0 | 54.0 | 2.00 | 11.2 | 15.6 | 60.0 |
| CTB-53 | 300 | 77.8 | 23.340 | 46.0 | 55.8 | 2.20 | 11.1 | 16.5 | 61.0 |
| CTB-55 | 250 | 79.0 | 19.750 | 46.8 | 58.0 | 2.20 | 11.3 | 15.2 | 65.0 |
| CTB-58 | 250 | 85.1 | 21.275 | 50.0 | 61.0 | 2.25 | 10.5 | 14.8 | 66.0 |
| CTB-61 | 200 | 98.9 | 19.780 | 54.0 | 65.0 | 2.40 | 12.2 | 15.0 | 69.0 |
| CTB-67 | 175 | 108.5 | 18.988 | 60.0 | 72.0 | 2.40 | 13.1 | 16.0 | 78.0 |
* A Dorriflake finish offers five times the corrosion protection over traditional zinc plating. It is available in Black, Silver, Brown, Tan, Blue, Green and Red (Mechanical Zinc is also available along with other finishes. Inquire for more information).
Dorriflake meets the following automotive specifications: General Motors: GM-7111-M; GM-7112-M;
Ford Motor Company: ESA-M21P5A; Ford World Wide: WSD-21P11-B1, WSD-21P11-B2; Chrysler Corporation: PS-7626.
| ROTOR CTL NO. | NOM. HOSE O.D. | FREE I.D. MAX D1 | FULL OPEN DIAMETER MIN D2 | W (Ref ) | THICKNESS T | |||||
| Inch | mm | Inch | mm | Inch | mm | Inch | mm | Inch | mm | |
| CTL-4 | .23 | 5.9 | .210 | 5.33 | .250 | 6.35 | .25 | 6.3 | .020 | .51 |
| CTL-4.5 | .28 | 7.1 | .240 | 6.10 | .300 | 7.62 | .25 | 6.3 | .015 | .38 |
| CTL-4.5 SP1 | .28 | 7.1 | .240 | 6.10 | .300 | 7.62 | .25 | 6.3 | .020 | .51 |
| CTL-5 | .31 | 7.9 | .301 | 7.65 | .345 | 8.76 | .31 | 7.9 | .030 | .76 |
| CTL-6 | .38 | 9.5 | .321 | 8.15 | .405 | 10.29 | .31 | 7.9 | .020 | .51 |
| CTL-6 SP1 | .38 | 9.5 | .335 | 8.51 | .410 | 10.41 | .31 | 7.9 | .020 | .51 |
| CTL-6.5 | .41 | 10.3 | .375 | 9.53 | .450 | 11.43 | .31 | 7.9 | .025 | .64 |
| CTL-7 | .44 | 11.1 | .405 | 10.29 | .485 | 12.32 | .31 | 7.9 | .025 | .64 |
| CTL-7.5 | .47 | 11.9 | .430 | 10.92 | .515 | 13.08 | .31 | 7.9 | .025 | .64 |
| CTL-8 | .50 | 12.7 | .460 | 11.68 | .545 | 13.84 | .31 | 7.9 | .030 | .76 |
| CTL-8.5 | .53 | 13.5 | .490 | 12.45 | .573 | 14.55 | .31 | 7.9 | .030 | .76 |
| CTL-9 | .56 | 14.3 | .500 | 12.70 | .621 | 15.77 | .31 | 7.9 | .030 | .76 |
| CTL-9 SP1 | .56 | 14.3 | .520 | 13.21 | .605 | 15.37 | .31 | 7.9 | .030 | .76 |
| CTL-9.5 | .59 | 15.1 | .520 | 13.72 | .650 | 16.51 | .31 | 7.9 | .030 | .76 |
| CTL-10 | .63 | 15.9 | .583 | 14.81 | .668 | 16.97 | .31 | 7.9 | .030 | .76 |
| CTL-10.5 | .66 | 16.7 | .620 | 15.75 | .725 | 18.42 | .31 | 7.9 | .030 | .76 |
| CTL-11 | .69 | 17.5 | .583 | 14.81 | .720 | 18.29 | .31 | 7.9 | .030 | .76 |
| CTL-11 SP1 | .69 | 17.5 | .639 | 16.23 | .709 | 18.01 | .31 | 7.9 | .045 | 1.14 |
| CTL-11 SP2 | .69 | 17.5 | .655 | 16.64 | .750 | 19.05 | .31 | 7.9 | .030 | .76 |
| CTL-11.5 | .72 | 18.3 | .685 | 17.40 | .775 | 19.69 | .38 | 9.5 | .050 | 1.27 |
| CTL-12 | .75 | 19.1 | .645 | 16.38 | .828 | 21.03 | .38 | 9.5 | .030 | .76 |
| CTL-13 | .81 | 20.6 | .750 | 19.05 | .900 | 22.86 | .38 | 9.5 | .040 | 1.02 |
| CTL-14 | .88 | 22.2 | .810 | 20.58 | .970 | 24.64 | .38 | 9.5 | .040 | 1.02 |
| CTL-15 | .94 | 23.8 | .860 | 21.84 | 1.030 | 26.16 | .38 | 9.5 | .045 | 1.14 |
| CTL-16 | 1.00 | 25.4 | .910 | 23.11 | 1.080 | 27.43 | .38 | 9.5 | .045 | 1.14 |
| CTL-16.5 | 1.03 | 26.2 | .950 | 24.13 | 1.130 | 28.70 | .38 | 9.5 | .035 | .89 |
| CTL-17 | 1.06 | 27.0 | .970 | 24.64 | 1.180 | 29.97 | .38 | 9.5 | .045 | 1.14 |
| CTL-18 | 1.13 | 28.6 | 1.040 | 26.42 | 1.240 | 31.50 | .38 | 9.5 | .045 | 1.14 |
| CTL-19 | 1.19 | 30.2 | 1.100 | 27.94 | 1.280 | 32.51 | .38 | 9.5 | .045 | 1.14 |
| CTL-20 | 1.25 | 31.8 | 1.180 | 29.97 | 1.450 | 36.83 | .38 | 9.5 | .045 | 1.14 |
| CTL-24 | 1.50 | 38.1 | 1.350 | 34.29 | 1.670 | 42.42 | .38 | 9.5 | .045 | 1.14 |
| CTL-26 | 1.63 | 41.3 | 1.450 | 36.83 | 1.800 | 45.72 | .38 | 9.5 | .045 | 1.14 |
Find out more by clicking on Single Wire Clamps, Double Wire Clamps or The Rotor Clamp Difference. Call an Engineered Source representative today for a quote on constant tension band clamps.