Sprocket disc KRS12B-2-Z021
Main dimensions for KRS12B-2-Z021
| Designation | Dimension | Remark |
|---|---|---|
| z | 21 | number of teeth |
| pt | 3/4" 19.05 mm |
Pitch (inch) - Dimensions for roller chain Pitch (metric) - Dimensions for roller chain |
| b1 | 7/16" 11.68 mm |
Internal width (inch) - Dimensions for roller chain Internal width (metric) - Dimensions for roller chain |
| d1 | 12.07 mm | Roller diameter - Dimensions for roller chain |
| Dk | 136.00 mm | Tip diameter (gearing) |
| Dt | 127.82 mm | Pitch circle diameter (gearing) |
| D | 20.00 mm | Diameter of pilot hole |
| C | 2.00 mm | Radius width |
| r | 19.00 mm | Gear radius |
| Zb | 10.80 mm | Tooth width |
| h2 | 30.30 mm | Tooth width |
Performance data for KRS12B-2-Z021
| Designation | Dimension | Remark |
|---|
Other sizes of KRS12B-2-Z021 series KRS12B-2 (72)
| Designation | Dimension | Roller chain | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| z | Dk | Dt | D | r | C | Zb | h2 | h3 | p | b1 | d1 | |||
| mm | mm | mm | mm | mm | mm | mm | mm | mm | inch | mm | inch | mm | ||
| KRS12B-2-Z008 | 8 | 57,60 | 49,78 | 12,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z009 | 9 | 62,00 | 55,70 | 12,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z010 | 10 | 69,00 | 61,64 | 12,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z011 | 11 | 75,00 | 67,61 | 16,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z012 | 12 | 81,50 | 73,60 | 16,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z013 | 13 | 87,50 | 79,59 | 16,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z014 | 14 | 93,60 | 85,61 | 16,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z015 | 15 | 99,80 | 91,63 | 16,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z016 | 16 | 105,50 | 97,65 | 20,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z017 | 17 | 111,50 | 103,67 | 20,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z018 | 18 | 118,00 | 109,71 | 20,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z019 | 19 | 124,20 | 115,75 | 20,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z020 | 20 | 129,70 | 121,78 | 20,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z021 | 21 | 136,00 | 127,82 | 20,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z022 | 22 | 141,80 | 133,86 | 20,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z023 | 23 | 149,00 | 139,90 | 20,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z024 | 24 | 153,90 | 145,94 | 20,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z025 | 25 | 160,00 | 152,00 | 20,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z026 | 26 | 165,90 | 158,04 | 20,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z027 | 27 | 172,30 | 164,09 | 20,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z028 | 28 | 178,00 | 170,13 | 20,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z029 | 29 | 184,10 | 176,19 | 20,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z030 | 30 | 190,50 | 182,25 | 20,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z031 | 31 | 196,30 | 188,31 | 20,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z032 | 32 | 203,30 | 194,35 | 20,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z033 | 33 | 209,30 | 200,40 | 20,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z034 | 34 | 214,60 | 206,46 | 20,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z035 | 35 | 221,00 | 212,52 | 20,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z036 | 36 | 226,80 | 218,58 | 25,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z037 | 37 | 232,90 | 224,64 | 25,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z038 | 38 | 239,00 | 230,69 | 25,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z039 | 39 | 245,10 | 236,75 | 25,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z040 | 40 | 251,30 | 242,81 | 25,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z041 | 41 | 257,30 | 248,87 | 25,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z042 | 42 | 264,50 | 254,93 | 25,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z043 | 43 | 270,50 | 260,98 | 25,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z044 | 44 | 276,50 | 267,03 | 25,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z045 | 45 | 282,50 | 273,10 | 25,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z046 | 46 | 287,90 | 279,16 | 25,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z047 | 47 | 294,00 | 285,21 | 25,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z048 | 48 | 300,10 | 291,27 | 25,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z049 | 49 | 306,20 | 297,33 | 25,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z050 | 50 | 312,30 | 303,39 | 25,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z051 | 51 | 318,40 | 309,45 | 25,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z052 | 52 | 324,50 | 315,50 | 25,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z053 | 53 | 330,50 | 321,56 | 25,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z054 | 54 | 336,60 | 327,64 | 25,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z055 | 55 | 342,70 | 333,70 | 25,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z056 | 56 | 348,70 | 339,75 | 25,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z057 | 57 | 355,40 | 345,81 | 25,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z058 | 58 | 361,50 | 351,87 | 25,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z059 | 59 | 367,50 | 357,93 | 25,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z060 | 60 | 373,00 | 363,99 | 25,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z062 | 62 | 385,10 | 376,12 | 30,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z064 | 64 | 397,20 | 388,24 | 30,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z065 | 65 | 403,20 | 394,29 | 30,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z066 | 66 | 409,20 | 400,35 | 30,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z068 | 68 | 421,40 | 412,49 | 30,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z070 | 70 | 433,60 | 424,60 | 30,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z072 | 72 | 447,00 | 436,74 | 30,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z075 | 75 | 463,90 | 454,91 | 30,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z076 | 76 | 469,90 | 460,99 | 25,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z078 | 78 | 482,10 | 473,10 | 30,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z080 | 80 | 494,20 | 485,22 | 30,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z085 | 85 | 524,50 | 515,55 | 30,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z090 | 90 | 554,80 | 545,86 | 30,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z095 | 95 | 585,10 | 576,17 | 30,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z100 | 100 | 615,40 | 606,47 | 30,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z110 | 110 | 676,10 | 667,11 | 30,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z114 | 114 | - | - | 30,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z120 | 120 | 736,70 | 727,74 | 30,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z125 | 125 | 767,00 | 758,05 | 30,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
Variants of KRS12B-2-Z021 (3)
| Designation | Dimension | Roller chain | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| z | Dk | Dt | D | r | C | Zb | h2 | h3 | p | b1 | d1 | |||
| mm | mm | mm | mm | mm | mm | mm | mm | mm | inch | mm | inch | mm | ||
| KRS12B-1-Z021 | 21 | 136,00 | 127,82 | 20,00 | 19,00 | 2,00 | 11,10 | - | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-2-Z021 | 21 | 136,00 | 127,82 | 20,00 | 19,00 | 2,00 | 10,80 | 30,30 | - | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
| KRS12B-3-Z021 | 21 | 136,00 | 127,82 | 20,00 | 19,00 | 2,00 | 10,80 | - | 49,80 | 19,05 | 3/4" | 11,68 | 7/16" | 12,07 |
Accessories to KRS12B-2-Z021 (1)
| Type | Designation | Brand | Full designation |
|---|---|---|---|
| 12B-2 | Roller chain (Duplex) | HFH | Roller chain (Duplex) 12B-2 |
Alternate brands for KRS12B-2-Z021 (1)
| Name | Brand | Webshop | Notice |
|---|---|---|---|
| KRS12B-2-Z021 | HFH | Premium quality, house brand |
Product features for KRS12B-2-Z021 (0)
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Variants of KRS12B-2-Z021 (41)
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