Direct answer: A Y19A should not be maintained only when drilling slows down. The archived Secoroc Y19A operator instructions call for checks once per shift after about 8 operating hours, a broader functional check after about 40 hours, and workshop inspection around 200 hours, with the interval adjusted to actual site conditions. The highest-leverage daily items are lubrication, clean compressed air, chuck-bushing condition, hose and coupling leakage, correct air/water pressure, and a clean H22 shank.
This guide turns those model-specific instructions into a practical field routine for quarry, mine, civil-work and contractor teams using the PerfoMax Y19A hand-held pneumatic rock drill.
1. What Maintenance Interval Does the Y19A Use?
The Y19A operator instructions separate routine care into three practical intervals. These are starting points, not a reason to ignore severe dust, wet drilling, dirty air, freezing conditions or unusually high utilization.
| Interval | Primary purpose | Key checks |
|---|---|---|
| Every shift / about 8 h | Prevent avoidable wear and operating loss | Chuck bushing, side-bolt nuts, hoses/couplings/controls, lubrication, air-line cleanliness, water separator, air and water pressure |
| Weekly / about 40 h | Catch functional deterioration | Basic check of all drilling-equipment functions; investigate abnormal rotation, percussion, flushing or leakage |
| Monthly / about 200 h | Workshop-level condition inspection | Inspect the rock drill in a workshop; shorten or extend the overhaul interval only according to operating condition and observed wear |
Buyer/operator takeaway: use hours as a trigger, but use condition as the decision variable. Atlas Copco likewise notes that wear in pneumatic rock drills depends on application, drilled material and air-line setup, so planned inspection should be combined with observed wear limits.
2. Pre-Shift Checks Before Connecting the Y19A
Check the drill, shank and flushing path
- Confirm the drill is in serviceable condition and that the air inlet and exhaust ports are unobstructed.
- Inspect the impact face of the drill-steel shank. It should be flat and free from obvious damaging wear.
- Make sure the flushing hole through the drill steel and bit is open.
- Inspect hoses, fittings and couplings for damage, looseness or leakage risk before pressurizing.
- Confirm that the drill steel matches the chuck. The Y19A reference configuration uses an H22 × 108 mm shank.
If replacement steel is needed, see the current H22 taper drill rod and H22 taper button bit pages for the PerfoMax supply scope.
Blow out the air hose
Before daily use, blow accumulated dirt and moisture out of the compressed-air hose before connecting it to the drill. Contamination is not a cosmetic issue: foreign material carried into a pneumatic percussion mechanism can interfere with valves, guides and sliding surfaces.
Check the line lubricator
The Y19A uses oil carried by compressed air to lubricate internal moving parts. Confirm that the lubricator contains the correct oil and is actually delivering it. A full reservoir alone does not prove lubrication is reaching the drill.
3. What Oil Should Be Used in a Y19A?
The archived Y19A instructions specify a mineral-based air-tool oil and vary viscosity with ambient temperature:
| Ambient temperature | Y19A manual viscosity guidance |
|---|---|
| -30 to 0 °C | ISO VG 32–68 |
| -10 to +20 °C | ISO VG 68–100 |
| +10 to +50 °C | ISO VG 100–150 |
Do not treat those ranges as a universal oil prescription for every pneumatic drill. They are model-specific guidance from the Y19A instructions. Current Atlas Copco guidance for pneumatic handheld tools reinforces the underlying principle: airline oil must maintain a protective film on moving parts to reduce friction, wear and heat.
A useful field confirmation is the shank: during operation, the chuck and drill-steel shank should retain an oil film. If the drill becomes unusually hot, verify oil delivery rather than assuming that oil visible in the exhaust proves the critical surfaces are being lubricated.
4. Air Pressure, Water Pressure and Hose Checks
The Y19A reference operating data uses 4–5 bar(e) working pressure. The archived instructions state that the compressor should deliver about 5 bar at the machine, warn that pressure above 6.3 bar can cause rough operation and damage, and note that pressure below 4 bar reduces drilling speed.
For wet drilling, the same instructions call for water pressure around 3 bar and, critically, no more than 1 bar below the air pressure. In other words, if air pressure at the drill is 5 bar, water pressure should remain below 4 bar. That pressure relationship helps prevent water from entering the percussion mechanism.
| Item | Y19A reference guidance | Why it matters |
|---|---|---|
| Working air pressure | 4–5 bar(e) | Too low slows drilling; excessive pressure can create rough operation and damage |
| Water pressure | About 3 bar; maximum 1 bar below air pressure | Reduces risk of water entering the impact mechanism |
| Air hose ID | At least 19 mm | Undersized hose can create pressure loss and starve the drill |
| Connection nipple / passage ID | At least 17 mm | Small restrictions can reduce delivered air |
| Preferred overall air-hose length | Less than about 20 m in the Y19A instructions | Longer/restrictive lines increase pressure loss |
These values should be checked at the machine under operating conditions, not inferred only from the compressor nameplate.
5. During Drilling: Watch the Interfaces That Create Wear
Collar at reduced feed
Start the hole with reduced feed until the drill steel has a secure footing, then increase to normal operation. Avoid bending the drill steel. Side loading increases wear at the shank bushing and piston, reduces efficiency and raises drill-steel breakage risk.
Watch the chuck and shank
The chuck-bushing/shank interface is one of the fastest places to see a maintenance problem. Excessive bushing wear allows the shank to move incorrectly, accelerating shank deformation and drill-steel consumption. Oil film, fit and abnormal movement should therefore be checked together.
Do not ignore changes in sound, heat or rotation
A sudden change from the normal operating sound, rising housing temperature, uneven running or weak rotation is a maintenance signal. Stop and diagnose before the symptom becomes a piston, guide, spline or valve failure.
6. The 8-Hour / Once-a-Shift Checklist
- Chuck bushing: inspect for excessive wear or abnormal shank movement.
- Side-bolt nuts: check tightness and look for evidence of uneven clamping.
- Hoses, couplings and controls: inspect for leakage, damage and insecure connections.
- Lubrication: confirm oil level and oil delivery to the drill.
- Air hose: blow out dirt and moisture before use.
- Water separator: drain collected moisture where fitted.
- Air and water pressure: verify actual operating pressure and maintain the required pressure difference when wet drilling.
- Drill steel and flushing hole: reject seriously worn steel and clear blocked flushing passages.
Record recurring defects rather than resetting the checklist to zero every shift. Repeated leakage, fast bushing wear or rapid shank deformation often points to a system condition—not just a single bad part.
7. Weekly and 200-Hour Checks
After about 40 operating hours
Perform a basic functional check of the full drilling equipment. Verify that percussion, rotation, throttle response, flushing and connections behave normally. If one function is degrading, diagnose it before simply increasing pressure or feed.
Around 200 operating hours
The archived Y19A instructions call for workshop inspection around this point and explicitly note that local operating conditions determine whether this is the right overhaul interval. Dust exposure, moisture, dirty compressed air, intensive production and upward drilling can justify shorter service intervals.
8. Common Y19A Symptoms and the First Maintenance Direction
| Symptom | Likely maintenance direction | First checks |
|---|---|---|
| Penetration rate drops | Air leakage, worn shank sleeve/bushing, internal wear, dull steel/bit | Leak test, delivered pressure, chuck/shank condition, bit condition |
| Poor rotation | Wear in splined/ratchet rotation components | Stop forcing the drill; workshop inspection of rotation train |
| Uneven running | Contamination, seized guide/piston, freezing, uneven side-bolt tension | Air quality, lubrication, moisture, alignment and workshop inspection |
| Drill gets hot | Insufficient oil delivery | Lubricator setting and oil film at the shank |
| Freezing | Moist compressed air or incorrect wet-drilling pressure relationship | Drain/separate condensate; verify water pressure remains below air pressure |
| Shank difficult to remove | Shank deformation, worn bushing or poor shank condition | Inspect H22 shank face, bushing wear and alignment |
Boundary: do not keep operating a drill with suspected piston seizure, cracked components, serious spline wear or abnormal internal leakage. Move the tool to workshop inspection rather than trying to compensate with more pressure.
9. Shutdown and Storage
After wet drilling, shut off water before shutting off compressed air, then run the drill briefly to help clear residual moisture. Place the drill on a clean board, stone or similar surface rather than directly in cuttings where debris can enter the chuck.
Before storage, oil the drill. For long-term storage, the Y19A instructions call for adding oil through the air inlet, briefly applying air to distribute it, keeping the drill clean and dry, and protecting the chuck opening from dirt. The purpose is corrosion control as much as lubrication.
10. Service or RFQ Information to Record
If maintenance reveals a part or consumable issue, send the following information with the service request or RFQ:
- Tool model: Y19A and any available serial/identification details
- Actual air pressure measured at the drill while operating
- Wet or dry drilling and actual water pressure if used
- Air hose inner diameter and approximate hose length
- Lubricator type, oil grade and observed oil-delivery condition
- Drill steel shank: H22 × 108 mm reference configuration and current shank condition
- Hole diameter, rock condition and normal drilling direction
- Symptom: heat, leakage, weak percussion, poor rotation, freezing, bushing wear or difficult steel removal
- Photos of chuck/shank wear and any damaged part
For current product configuration or replacement consumables, review the Y19A product page or contact PerfoMax with the operating information above.
FAQ
How often should a Y19A rock drill be serviced?
The archived Y19A instructions specify once-per-shift checks after about 8 operating hours, a basic functional check after about 40 hours, and workshop inspection around 200 hours. Harsh local conditions can justify shorter intervals.
What is the normal Y19A air pressure?
The Y19A reference working range is 4–5 bar(e). Measure at the machine under operating flow. The model instructions warn that low pressure reduces drilling speed and excessive pressure can cause rough operation and damage.
What oil should be used for a Y19A?
Use a suitable air-tool/rock-drill oil delivered through the airline lubricator. The archived Y19A manual gives ISO VG ranges according to ambient temperature; confirm the oil grade against your temperature and the applicable equipment instructions.
Why does a Y19A get hot?
Insufficient lubrication is a primary check. Confirm that oil is reaching the drill and that an oil film is present at the chuck and shank. Continued abnormal heat after lubrication is corrected requires workshop diagnosis.
What should I check if a Y19A suddenly drills slower?
Start with delivered air pressure, hose/coupling leakage, bit and drill-steel condition, chuck-bushing wear and lubrication. Do not assume the compressor pressure setting alone proves the drill is receiving enough air.
Technical References
- Secoroc, Y19A Hand Held Rock Drill — Operator's Instructions / Spare Parts List, archived technical copy.
- Atlas Copco, AIR OIL for Pneumatic Handheld Tools — lubrication requirements for pneumatic breakers and rock drills.
- Atlas Copco, Service Kits / Parts and Service for Pneumatic Rock Drills — scheduled inspection, wear limits and maintenance planning.
- Epiroc, Rock Drill 100 — lubricant developed for pneumatic, DTH and hydraulic rock-drill service.
Need help confirming Y19A consumables or service information? Send PerfoMax the tool model, operating pressure, hose setup, shank condition and drilling application through the Contact page.