# Maintenance intervals

One cycle is calculated on a standard stack of 10 mm.

|  |  |  | Heavy Usage | Medium Usage | Light Usage
--- | --- | --- | --- | --- | --- | ---
Cycles | Total drilling length (meter) | Action | Spare part | Use kit, Ordering No. | Use kit, Ordering No. | Use kit, Ordering No.
a Independent from the drilling thickness
10,000 | 100 | Replace | Bevel gear (RA tool) | 4141 0410 91 |  |
20,000 | 200 | Replace | Chiplet | 4141 0713 9X 4141 0759 9X |  |
Ratcheta | 4141 0713 9X 4141 0759 9X |  |
25,000 | 250 | Replace | Ratcheta |  | 4141 0713 9X 4141 0759 9X | 4141 0713 9X 4141 0759 9X
50,000 | 500 | Replace | Bevel gear (RA tool) |  | 4141 0410 91 |
Thrust bearing | 4141 0509 91 |  |
Chiplet |  | 4141 0713 9X 4141 0759 9X |
Piston | 4081 0496 90 | 4081 0496 90 | 4081 0496 90
Re-grease | Planetary shaft (LS tool) | Grease (Type A) | Grease (Type A) | N/A
Overload clutcha | Grease (Type A) | Grease (Type A) | Grease (Type A)
100,000 | 1000 | Replace | Bevel gear (RA tool) |  |  | 4141 0410 91
Thrust bearing |  | 4141 0509 91 | 4141 0509 91
Chiplet |  |  | 4141 0713 9X 4141 0759 9X
Planetary shaft (LS tool) | 4141 0444 90 |  |
Overload clutcha | 4141 0498 92 | 4141 0498 92 | 4141 0498 92
200,000 | 2000 | Replace | Planetary shaft (LS tool) | 4141 0444 90 |  |

The drilling operation may produce different efforts (torque, thrust) than the estimated value due to different cutting tools geometry, material properties or lubrication. Therefore, the same operation can be categorized differently.

| Heavy Usage | Medium Usage | Light Usage
--- | --- | --- | ---
Rotational speed and Drilling efforts | Speed 350-1200 rpm Torque 4 Nm Thrust 1.3 KN | Speed 1600-3200 rpm Torque 1.2 Nm Thrust 0.6 KN | Speed 3200-7300 rpm Torque 0.5 Nm Thrust 0.25 KN
Example of operations | Drill bit >14 mm (>9/16") Material: Alu 10 < Drill bit <12,7 mm (<1/2") Material: Titan | 10 < Drill bit <14mm (<9/16") Material: Alu Drill bit: <10mm (<3/8") Material: Titan Drill bit > 12,7mm (>1/2") Material: CF | Drill bit: <10 mm (<3/8") Material: Al Drill bit: <12,7mm (<1/2") Material: CFRP