J series hook type commutator specification list
| Part No. | Structure | Bar No. | O.D. | I.D. | Height of bar | Height | Length of hook | O.D. of hook |
| J-81 | Hook type | 24 | 25.5 | 10 | 15.7 | 17.2 | 3 | 30.3 |
| J-81A | Hook type | 24 | 25.5 | 10 | 15.4 | 17.2 | 3 | 30.3 |
| J-82 | Hook type | 22 | 25.4 | 9.04 | 16.5 | 18.5 | 3.2 | 30 |
| J-83 | Hook type | 24 | 21.5 | 6.05 | 11 | 12.8 | 2.2 | 25 |
| J-83A | Hook type | 24 | 21.5 | 6.13 | 11 | 12.8 | 2.2 | 25 |
| J-84 | Hook type | 22 | 28 | 9.04 | 18 | 19 | 3 | 33 |
| J-84A | Hook type | 22 | 28 | 9.04 | 18 | 19 | 3 | 32.5 |
| J-84B | Hook type | 22 | 28 | 10.19 | 18 | 19 | 3 | 33 |
| J-85 | Hook type | 20 | 20.8/24 | 8 | 13.4 | 17.5 | 3.7 | 29.5 |
| J-85A | Hook type | 20 | 20.8/24 | 8 | 13.4 | 17.5 | 3.7 | 29.5 |
| J-87 | Hook type | 13 | 20.5/20.8 | 8.04 | 13.9 | 21 | 3 | 27.5 |
| J-88 | Hook type | 24 | 28 | 9 | 18.1 | 21.5 | 3 | 34.2 |
| J-89 | Hook type | 24 | 25.5 | 9 | 17.2 | 18.5 | 3 | 30.15 |
| J-89A | Hook type | 24 | 25.5 | 8 | 17.2 | 18.7 | 3 | 30.3 |
| J-89B | Hook type | 24 | 25.5 | 8 | 18 | 18.7 | 3 | 30.3 |
| J-89C | Hook type | 24 | 25.5 | 10 | 18 | 18.7 | 3 | 30.3 |
| J-89D | Hook type | 24 | 25.5 | 10 | 18 | 18.7 | 3 | 30.3 |
| J-90 | Hook type | 48 | 45.5 | 17 | 19.4 | 21.5 | 3 | 51.5 |
| J-91 | Hook type | 20 | 16 | 6.35 | 10 | 10.2 | 2 | 20 |
| J-92 | Hook type | 24 | 28 | 8 | 18 | 19 | 3.5 | 34.2 |
| J-93 | Hook type | 20 | 16 | 4.5 | 10 | 11 | 2.5 | 20 |
| J-95 | Hook type | 24 | 24.2 | 9 | 14 | 18.5 | 2.44 | 27.7 |
| J-97 | Hook type | 22 | 28.6 | 9.9 | 18.3 | 20 | 3.4 | 33.8 |
| J-98 | Hook type | 22 | 22.3 | 6.41 | 11.8 | 12.3 | 2.5 | 26.9 |
| J-99 | Hook type | 22 | 25.4 | 9.04 | 18.3 | 19.5 | 3 | 31 |
| J-100 | Hook type | 24 | 25.5 | 10.2 | 15.7 | 17.2 | 3 | 30.3 |
| J-101 | Hook type | 24 | 18.7 | 6.36 | 10.9 | 13.1 | 2.3 | 22 |
| J-101A | Hook type | 24 | 18.7 | 4 | 10.9 | 13.1 | 2.3 | 22 |
| J-102 | Hook type | 24 | 18.7 | 8 | 10.9 | 13.1 | 2.3 | 22 |
| J-102A | Hook type | 24 | 18.7 | 4.01 | 10.9 | 13.1 | 2.3 | 22 |
| J-103 | Hook type | 24 | 21.5 | 6.35 | 10.8 | 11.4 | 2.2 | 25 |
| J-104 | Hook type | 24 | 21.5 | 8 | 10.8 | 11.4 | 2.2 | 25 |
| J-105 | Hook type | 24 | 21.5 | 8 | 11 | 11.4 | 2.4 | 25 |
| J-107 | Hook type | 32 | 32 | 12 | 18.7 | 21 | 4.2 | 39 |
| J107A | Hook type | 32 | 32 | 12 | 18.3 | 21 | 4.2 | 39 |
| J-107B | Hook type | 32 | 32 | 12 | 18.3 | 21 | 4.2 | 39 |
| J-107C | Hook type | 32 | 32 | 12 | 18.3 | 21 | 4.2 | 39 |
| J-108 | Hook type | 20 | 20.5 | 8 | 11.7 | 12.3 | 2.5 | 24.5 |
| J-108A | Hook type | 20 | 20.5 | 8 | 11.7 | 12.3 | 2.5 | 24.5 |
| J-109 | Hook type | 20 | 20.5 | 7 | 11.7 | 12.3 | 2.5 | 24.5 |
| J-110 | Hook type | 20 | 20.5 | 5 | 11.7 | 12.3 | 2.5 | 24.5 |
| J-111 | Hook type | 20 | 20.5 | 8.02 | 14.2 | 15.5 | 3.3 | 25 |
| J-111A | Hook type | 20 | 20.5 | 8.07 | 14.2 | 15.5 | 3.3 | 25 |
| J-111B | Hook type | 20 | 20.5 | 10 | 14.2 | 15.5 | 3.3 | 25 |
| J-111C | Hook type | 20 | 20.5 | 8.02 | 14.2 | 15.5 | 3.3 | 25 |
| J-112 | Hook type | 24 | 19 | 5 | 11.1 | 12.5 | 2.4 | 22 |
| J-113 | Hook type | 20 | 16 | 5 | 10 | 11 | 2.5 | 20 |
| J-114 | Hook type | 24 | 23.2 | 8 | 14.7 | 18.9 | 2.53 | 28.6 |
| J-115 | Hook type | 20 | 19 | 5 | 11.5 | 13.8 | 2.5 | 22 |
| J-115A | Hook type | 20 | 19 | 6.35 | 11.5 | 13.8 | 2.5 | 22 |
| J-115B | Hook type | 20 | 19 | 6 | 11.5 | 13.8 | 2.5 | 22 |
| J-116 | Hook type | 24 | 18.9 | 7.15 | 11.5 | 12.5 | 2.5 | 23.6 |
| J-116A | Hook type | 24 | 18.9 | 6.35 | 11.5 | 12.5 | 2.5 | 23.6 |
| J-116B | Hook type | 24 | 18.9 | 6.35 | 11.5 | 12.5 | 2.5 | 23.6 |
| J-116C | Hook type | 24 | 18.9 | 7.14 | 11.5 | 12.5 | 2.5 | 23.6 |
| J-117 | Hook type | 24 | 18.9 | 7.15 | 11.1 | 12.5 | 2.4 | 22 |
| J-117A | Hook type | 24 | 18.9 | 6 | 11.1 | 12.5 | 2.4 | 22 |
| J-117B | Hook type | 24 | 18.9 | 8 | 11.1 | 12.5 | 2.4 | 22 |
| J-117C | Hook type | 24 | 18.9 | 7.15 | 11.1 | 12.5 | 2.5 | 22.8 |
| J-117D | Hook type | 24 | 18.9 | 8 | 11.1 | 12.5 | 2.5 | 22.8 |
| J-117E | Hook type | 24 | 18.9 | 6.35 | 11.1 | 12.5 | 2.5 | 22.8 |
| J-118 | Hook type | 10 | 22.7 | 9 | 14 | 16 | 4.1 | 29 |
| J-119 | Hook type | 18 | 16.5 | 5.99 | 11.8 | 12.75 | 2.5 | 21.4 |
| J-119A | Hook type | 18 | 16.5 | 5.99 | 11.8 | 12.75 | 2.5 | 21.4 |
| J-120 | Hook type | 24 | 23.2 | 8 | 14.7 | 16.4 | 2.8 | 27.5 |
| J-120A | Hook type | 24 | 23.2 | 8 | 14.7 | 16.4 | 2.8 | 27.5 |
| J-120B | Hook type | 24 | 23.2 | 8 | 14.7 | 16.4 | 2.8 | 27.5 |
| J-120C | Hook type | 24 | 23.2 | 8 | 14.7 | 16.4 | 2.8 | 27.5 |
| J-121 | Hook type | 22 | 23.6 | 8.05 | 14.5 | 17.8 | 3.5 | 28.9 |
| J-122 | Hook type | 8 | 15 | 4 | 10.4 | 10.8 | 2 | 18.26 |
| J-123 | Hook type | 24 | 19 | 8 | 11.1 | 12.5 | 2.4 | 22 |
| J-123A | Hook type | 24 | 19 | 8 | 11.1 | 12.5 | 2.4 | 22 |
| J-123B | Hook type | 24 | 19 | 6 | 11.1 | 12.5 | 2.4 | 22 |
| J-124 | Hook type | 32 | 25.2 | 8 | 14 | 15 | 3 | 29.3 |
| J-124A | Hook type | 32 | 25.2 | 10.04 | 14 | 15 | 3 | 29.3 |
| J-124B | Hook type | 32 | 25.2 | 10.04 | 14 | 15 | 3 | 29.3 |
| J-124C | Hook type | 32 | 25.2 | 10.04 | 14 | 15 | 3 | 29.3 |
| J-125 | Hook type | 24 | 38 | 15.5 | 27 | 28 | 5.4 | 46.3 |
| J-125A | Hook type | 24 | 38 | 15.5 | 27 | 28 | 5.4 | 46.2 |
| J-125B | Hook type | 24 | 38 | 15.5 | 27 | 28 | 5.4 | 46.3 |
| J-125C | Hook type | 24 | 38 | 15.5 | 27 | 28 | 6 | 46.3 |
| J-126 | Hook type | 12 | 28.5 | 14.2 | 20.2 | 21 | 5 | 35.5 |
| J-126A | Hook type | 12 | 28.5 | 14 | 20.2 | 21 | 5 | 35.5 |
| J-126B | Hook type | 12 | 28.5 | 14 | 20.2 | 21 | 5 | 35.5 |
| J-127 | Hook type | 10 | 22.7 | 12.5 | 19.8 | 21 | 5 | 29.4 |
| J-129 | Hook type | 24 | 25 | 8.41 | 15.7 | 17.2 | 2.4 | 30.3 |
| J-130 | Hook type | 23 | 20.5 | 8 | 14 | 21.5 | 3.5 | 27.12 |
| J-131 | Hook type | 22 | 23.6 | 8.05 | 17.2 | 20.3 | 3.2 | 28.9 |
| J-131A | Hook type | 22 | 23.6 | 8.05 | 17.2 | 20.3 | 3.2 | 28.9 |
| J-132 | Hook type | 12 | 18.9 | 7.15 | 11.3 | 12.5 | 2.5 | 23.6 |
| J-132A | Hook type | 12 | 18.9 | 6.35 | 11.3 | 12.5 | 2.5 | 23.6 |
| J-132B | Hook type | 12 | 18.9 | 6.35 | 11.3 | 12.5 | 2.5 | 23.6 |
| J-132C | Hook type | 12 | 18.9 | 6 | 11.3 | 12.5 | 2.5 | 23.6 |
| J-133 | Hook type | 10 | 14.9 | 6.35 | 10 | 10.6 | 2 | 19 |
| J-133A | Hook type | 10 | 14.9 | 4.5 | 10 | 10.6 | 2 | 19 |
| J-134 | Hook type | 24 | 21.5 | 7 | 12.5 | 13 | 2.5 | 25 |
| J-135 | Hook type | 23 | 20.5 | 8 | 13 | 21 | 3.5 | 27 |
| J-136 | Hook type | 23 | 20.5/22 | 8 | 14.6 | 26 | 3.5 | 27 |