The SB315 Safety brake follows a "hierarchical maintenance system" based on working hours and usage frequency, with core maintenance cycles divided into daily inspection, regular maintenance, and annual overhaul.
1. Daily Inspection (1 Time/Shift)
Check hydraulic system pressure (should stay within 16–21 MPa) and for oil leakage at cylinder joints, hoses, and fittings.
Verify the status of safety switches (release limit + lining wear limit) to ensure they send normal signals to the control system.
Inspect the brake disc surface for oil stains, metal debris, or obvious scratches; clean immediately if contaminants are found.
Listen for abnormal noise during braking/release; troubleshoot if there's jitter or squealing.
2. Regular Maintenance (Fixed Cycles)
| Maintenance Cycle | Key Operations |
|---|---|
| 3 Months or 500 Working Hours | Check hydraulic oil quality (replace if it's discolored, turbid, or contains impurities). Clean the oil filter and air breather of the hydraulic station. Inspect hose aging (replace if cracks or bulges appear). |
| 6 Months or 1000 Working Hours | Measure friction lining thickness (replace immediately if ≤5 mm). Check seal integrity of hydraulic cylinders (replace damaged seals to avoid leakage). Verify disc parallelism (adjust if deviation exceeds 0.15 mm). |
| 12 Months or 2000 Working Hours | Overhaul hydraulic cylinders: Disassemble, clean piston rods, and replace aging seals. Resurface the brake disc if wear depth exceeds 2 mm or there are deep grooves. Calibrate safety switches to ensure accurate signal triggering. |
| 2 Years or 4000 Working Hours | Inspect disc spring elasticity (replace if fatigue deformation or loss of force is detected). Conduct a full-system pressure retention test (pressure drop should ≤0.5 MPa within 10 minutes). Replace all hydraulic hoses (even if no visible damage, as aging may cause hidden risks). |
3. Special Environment Adjustments
In dusty, humid, or high-salt environments (e.g., ports, mines), shorten all maintenance cycles by 30% (e.g., 6-month maintenance becomes 4.2 months).
For continuous operation (24/7) or high-frequency use (≥1000 cycles/month), reduce the 3-month maintenance to 2 months and the 6-month maintenance to 4 months.
4. Maintenance Precautions
All maintenance must be performed after cutting off power and relieving hydraulic system pressure (follow LOTO procedures).
Use only matching hydraulic oil (ISO VG 32/46) and original spare parts (especially liners, seals, and springs) to avoid performance degradation.
Record maintenance details (dates, parts replaced, test data) to track the brake's service status.
Would you like me to compile a printable maintenance record sheet for the SB315, including inspection items, cycle reminders, and test data entry columns, to facilitate standardized tracking?
