Deep Hole Drilling Machine Maintenance Log and Repair Records

Machine maintenance logs are not paperwork — they are the machine's medical history. A complete log tells you what has been done, what is due, what has failed before, and what is likely to fail next. Without records, every repair starts from zero knowledge.

What to Record ​

Essential Log Entries ​

Record Format ​

Log Formats ​

Paper Logbook ​

Digital Log (Spreadsheet) ​

CMMS (Computerized Maintenance Management System) ​

Daily Log Template ​

Shift Log Format ​

Machine: DHD-001   Date: 2026-06-04   Shift: 1   Operator: J. Smith

START OF SHIFT:
☐ Coolant level: OK (80%)
☐ Coolant concentration: 7.5% (target 7-9%)
☐ Coolant visual: Clear, no tramp oil layer
☐ Hydraulic oil level: OK
☐ Way oil level: OK (70%)
☐ Safety systems tested: All pass
☐ Chip conveyor: Clear
☐ Warm-up completed: 30 min

PRODUCTION:
Job: Piston-4140   Drill: GD-10mm-1283   Holes completed: 12
Chip shape: C-chips, 3-6 mm   Spindle load: 65-70%
Coolant pressure: 95 bar (stable)
Notes: None — process running normally

END OF SHIFT:
☐ Machine bed cleaned
☐ Chip tray emptied
☐ Coolant return screen cleaned
☐ Tool condition checked: Normal wear
☐ Issues for next shift: None

Repair Record Format ​

Repair Work Order ​

Using Records for Decisions ​

Data-Driven Maintenance Decisions ​

Trend Identification ​

Regulatory Requirements ​

Record Retention Requirements ​

FAQ ​

What should be included in a deep hole drilling machine maintenance log? ​

Record daily shift checks (coolant level, concentration, visual inspection), completed PM tasks (filter changes, lubrication, alignment), all repairs (problem, diagnosis, parts used, labor time), component replacements, tooling changes, alignment measurements, oil and coolant analysis results, and operator observations. The more complete the log, the more useful it is for decision making.

Is a paper logbook sufficient or do I need digital records? ​

Paper logbooks are sufficient for regulatory compliance and basic tracking, but digital records (spreadsheet or CMMS) enable trending, analysis, and data-driven decisions. If you maintain more than one machine, digital records quickly pay for themselves through reduced analysis time and improved maintenance planning.

How long should I keep machine maintenance records? ​

Keep maintenance records for the life of the machine plus at least one year. Safety-related records (lockout/tagout tests, risk assessments, incident reports) have specific retention periods that may be longer — typically 5–30 years depending on the regulation and jurisdiction.

How do I analyze maintenance records to find problem trends? ​

Sort records by component or system to identify the most frequent failures. Calculate MTBF for each system. Plot filter changes over time to detect coolant degradation. Plot repair frequency by month to see if maintenance is improving or worsening the machine's condition. A spreadsheet pivot table is the simplest analysis tool.

What is the most important record to keep? ​

The repair record — what failed, what the root cause was, and what was done to fix it. This data enables root cause analysis, identifies recurring problems, and helps predict future failures. Without repair records, every failure is a new surprise.

Maintenance records are an investment in future reliability. The time spent recording today's repair saves hours of diagnosis on tomorrow's failure. This article reflects industry practice as of 2026.