*活动带塑料防尘圈
*刹车自带解锁踏板，刹车块为尼龙材质，
不伤胎面
珠盘结构:
| 万向 | 固定 | 边剎 | 解锁后剎 | 轮径x轮宽 | 旋转半径(刹车) | 轮组总高 | 荷重 |
|---|---|---|---|---|---|---|---|
| C512S/PU4200B3 | C512R/PU4200B3 | C512BA/PU4200B3 | C512TJ/PU4200B3 | 100x50 | 84 (120) | 142 | 300 |
| C512S/PU1340 | C512R/PU1340 | C512BA/PU1340 | C512TJ/PU1340 | 130x40 | 99 (120) | 167 | 330 |
| C512S/PU5200B4 | C512R/PU5200B4 | C512BA/PU5200B4 | C512TJ/PU5200B4 | 130x50 | 99 (120) | 167 | 350 |
| C512S/PU1540 | C512R/PU1540 | C512BA/PU1540 | C512TJ/PU1540 | 150x40 | 119 (120) | 189 | 380 |
| C512S/PU1550 | C512R/PU1550 | C512BA/PU1550 | C512TJ/PU1550 | 150x50 | 119 (120) | 189 | 500 |
| C512S/PU2050 | C512R/PU2050 | C512BA/PU2050 | C512TJ/PU2050 | 200x50 | 157 (120) | 239 | 600 |
长度单位为"mm"
