直接答案 Quick Answer
YT28和YT29A都属于气腿式气动凿岩机。按本站现有资料，YT28参考重量26 kg、长度661 mm、孔径30-42 mm、耗气量不高于58 L/s、冲击频率不低于35 Hz；YT29A参考重量27 kg、长度659 mm、孔径30-45 mm、耗气量不高于65 L/s、冲击频率不低于37 Hz。这些差异只用于建立候选范围，不能直接推导哪一款效率更高或寿命更长。 Both are pneumatic air-leg drills. YT28 reference data: 26 kg, 661 mm, 30–42 mm, ≤58 L/s, ≥35 Hz. YT29A: 27 kg, 659 mm, 30–45 mm, ≤65 L/s, ≥37 Hz. These figures support a shortlist, not conclusions about superior productivity or life.
怎么建立候选范围 Building a shortlist
目标孔径在现有参考范围内时，还要继续核对岩性、孔深、作业方向、现场空间、空压机和管路条件。YT29A参考孔径范围更宽，但是否适合具体项目仍需按整套工况确认。 Even with a diameter match, check rock, depth, direction, space, compressor and hoses. YT29A has a wider reference diameter range, but suitability requires the full operating conditions.
下单前必须确认 Confirm before ordering
型号名称不能代替出厂配置。气腿、注油器、钎具、气水管路、备件、包装与铭牌信息应写入订单确认文件。 The model name is not a factory configuration. Document air leg, lubricator, tooling, air/water hoses, spares, packaging and nameplate details.
- 现场岩性、孔径和孔深 Site rock, diameter and depth
- 同时工作的设备数量和供气条件 Simultaneous equipment count and air supply
- 气腿、注油器与钎具规格 Air-leg, lubricator and tooling specifications
- 产品铭牌、包装和最终配置单 Nameplate, packaging and final configuration list