Yt29A Air Leg Rock Drill

• Application: Pneumatic Breakers
• Condition: New
• Color: Any Color
• Transport Package: Carton
• Specification: 26kg
• Origin: China
• Model NO.: YT29A

Product Description

YT29A Air Leg Rock Drill
The YT29A rock drill is the most strongest, powerful and highly efficient rock drill in the range.It gives improved productivity and drill steel economs and can be used on all rock formation and in all kinds of applications.
Specification:
Weight                                                         26 KG
All length                                                      660MM
Air consumption                                                ≤82L/S
Drilling Frequency                                               ≥40HZ
Air pipe inner Dia.                                                25MM
Water pipe inner Dia.                                              13MM
Drilling Hole Dia.                                              34-42MM
Drilling Depth                                                      5M
Shank Size                                                   22*108mm
Air pressure                                                    0.63Mpa
FT160 Air leg:
Weight                                                                    17KG
Length                                                                 1800MM
Pushing stroke                                                           1370MM
FY250 Oil Reservior:
Weight                                                                   1.2KG
Oil capacity                                                               250ML
 Maintenance
1,Notice

1. Machine should be oiled by the rustproof grease, before using. On using, reoil machine and assemble it .

1. When connecting water pipe and air pipe, blow off dirty to protect parts.
2. 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.

1. When finishing using machine,cut off water supply and let machine run slowly ,then blow off the rest moisture to avoid rusting parts.

1. 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.

1. If machine should store for a long time, diamantle machine for clean, oil and seal , then placed a dry place.

 2,Lubrication
Lubrication has great influence in the performance and working life.Do not operate machine without lubricating oil

Temperature	Name	No	Flash  point	Kinematic  viscosity	Solidifying  point	Standard
10-30ºC	Machine oil	N46	180ºC	41.4-50.6(40ºC)	-10ºC	GB443-84
-10-10ºC	Machine oil	N22	170ºC	19.8-24.2(40ºC)	-15ºC	GB443-84
-30-10ºC	Refrigerator oil	HD-13	160ºC	11-15(50ºC)	-40ºC	Y1213-79

3,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).
4,Water pipe and pressure
Water pipe inner dia. is 13mm and water pressure is 0.2-0.3Mpa.
5,Drill
    Drill specification is GB6481-86. as draw process shank.
6,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 200ºC,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 200ºC, insert shank sleeve into rotation sleeve, knock shank into bottom.
3,Air connection tube and water connection tube
   When dismantling ,push in air connection tube and water connection tube,fetch steel wire ring clamp with tool. When assembling, push air connection tube and water connection tube into the right handle, put steel wire ring clamp into half slot ,then pull air connection tube and water connection tube
4,When assembling ,tighten two sides of side bolt nut to ensure every parts of machine work well.
7,Safety
1,Ensure that technical safe practices are employed.
2,Pay attention to the position of steel wire ring clamp.
3,Check steel wire ring clamp whether or not abrase, if so, change another at once.