YT28 Air-leg Rock Drill
Instruction
The rock drill is a kind of high efficiency air leg rock drill machinery. It is mainly used for diging into mine laneway and blasting holes in all drilling works. It is indispensably importance machine tool in metallurgy, coal, railway, traffic, water conservancy construction and national defence stone project.
It is suitable for drilling and blasting under various of rocks at any direction angles. Blast hole dia is 34-42mm, drill hole depth is 5 m This machine may match with Model FT160BD short air leg or Model FT160BC long air leg.
This machine has transparent surface of FY200B oil reservoir, easy to observe the oil lever, adjust oil quantity, ensure the well lubricated.
Specification
Weight 26 kg
Length 661mm
Cylinder dia 80mm
Piston stroke 60mm
Air pressure 0.4- 0.63MPa
Impact frequencey ≥ 37 Hz
Air consumption ≤ 81L/S
Air pipe (inner dia ) 25mm
Water pipe (inner dia ) 13mm
Drill bit dia 34-42mm
Shank dimensions(hex× Length) 22× 108± 1mm
The function specification that Air pressure is 0.63Mpa
FT160BD Air leg(short)
Length 1400mm
Push stroke 965mm
Maintenance
Notice
1 Machine should be oiled by the rustproof grease, before using. On using, reoil machine and assemble it.
2 When connecting water pipe and air pipe, blow off dirty to protect parts.
3 Before open machine, should inspect the flexibility and reliability of all control structure and operation part; Oil reservoir be filled with lubrication, and measure oil quantity well, ensure mahine run regularly.
4 When finishing using machine, cut off water supply and let machine run slowly, then blow off the rest moisture to avoid rusting parts.
5 The machine which often use, should pay attention to maintenance. Examine and repair every week at least, Clean the dirty within the machine and note to replace and change the damage and invalidation parts, eliminate the malfunction and hidden trouble.
6 If machine should store for a long time, diamantle machine for clean, oil and seal, then placed a dry place.
Air pipe and pressure
1, Air pipe inner dia. Is 25mm and it's length is ≤ 15m. Pipe connector dia. Is ≥ 20mm.
2, This diagram show the relation between speed and air pressure. (0.4-0.63Mpa for better).
Water pipe and pressure
Water pipe inner dia. Is 13mm and water pressure is 0.2-0.3Mpa.
Drill
Drill specification is GB6481-86. As draw process shank.
Dismantlement
1, Distributing valve
Dismantle and assemble distributing valve, do not knock. After assembling, ensure that valve positioned correctly and is free to move between the two seats.
2, Shank cover
When dismantling shank sleeve, heat rotations sleeve up to 200° C, insert shank (shank collar dia is ≤ 30mm) into rotation sleeve, then knock out shank sleeve with bishop. When assembling shank sleeve, heat rotation sleeve up to 200° C, insert shank sleeve into rotation sleeve, knock shank into bottom.
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