*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/NW1050 | C512R/NW1050 | C512BA/NW1050 | C512TJ/NW1050 | 102x50 | 84 (120) | 142 | 300 |
| C512S/NW1340 | C512R/NW1340 | C512BA/NW1340 | C512TJ/NW1340 | 127x40 | 99 (120) | 167 | 330 |
| C512S/NW1540 | C512R/NW1540 | C512BA/NW1540 | C512TJ/NW1540 | 152x40 | 119 (120) | 189 | 350 |
| C512S/NW1540vc | C512R/NW1540vc | C512BA/NW1540vc | C512TJ/NW1540vc | 152x40 | 119 (120) | 189 | 400 |
| C512S/NW2050 | C512R/NW2050 | C512BA/NW2050 | C512TJ/NW2050 | 203x50 | 157 (120) | 239 | 600 |
