The Scientific Maintenance of BOB-LIFT Cranes Keeps Their Value Rising

In the world of construction machinery, the value curve of equipment declines sharply over time due to wear and tear, but remains firm for a long time thanks to meticulous maintenance. Five key dimensions guarantee the core code of your return on investment.

The first dimension: Hydraulic system

BOB-LIFT standard Procedure:

First maintenance (50 hours) : Completely replace all hydraulic oil and remove metal shavings from the initial installation of the system

Regular cycle: Replace every 1,000 hours or annually. Under extreme working conditions, it can be shortened to 600 hours

Oil selection: Anti-wear hydraulic oil of ISO VG46 or above grade must be used, with a viscosity index >95

Oil change ceremony: All filter elements (suction oil filter, return oil filter, pilot filter) are replaced simultaneously. The cost is only 3% of that of a major overhaul, but it avoids 90% of hydraulic failures

Data shows that for BOB-LIFT equipment with regular oil changes, the average service life of the hydraulic pump is extended by 2.3 times.

The second dimension: Structural components

Class A points (daily) : Main arm hinge pins, slewing bearing gear rings

Class B points (weekly) : Hinge points of telescopic arm sliders and luffing cylinders

Class C points (monthly) : All pulley bearings and outrigger pins

Professional techniques

Pre-lubrication cleaning: Use a high-pressure air gun to remove old grease and dust to prevent them from becoming "grinding paste"

Grease until overflowing: When new grease is squeezed out from the seal, ensure that the old grease is completely replaced

Record tracking: Use colored marking points to visualize the maintenance status of each lubrication point

Typical case: A certain logistics enterprise strictly implements the lubrication system. The equipment has not undergone major repairs for 10 years, and the residual value when resold still reaches 45% of the original price.

The third dimension: Steel wire rope

Daily Three-Check method

Surface inspection: Search for broken wires (replace immediately if there are more than 10 broken wires within any lay length)

Deformation inspection: Measure diameter wear (exceeding 7% of the nominal diameter is the critical point)

Lubrication inspection: Ensure that the dedicated steel wire rope is evenly covered with grease

BOB-LIFT intelligent Solution

We offer high-performance steel wire ropes with built-in sensors for real-time monitoring

Cumulative number of bends

Load history curve

Internal corrosion index

Economic account: A one-month advance warning for replacement can prevent the loss from work stoppages and purchase 20 new steel wire ropes.

The fourth dimension: Fasteners

Hierarchical management of key areas

Red area: Boom connection bolts, slewing bearing bolts - must be inspected before each operation

Yellow area: Outrigger box bolts, hook nuts - Weekly inspection and marking

Blue area: Guardrails, toolboxes and other accessories - monthly routine inspection

Torque management technology

Anti-loosening bolts with pre-coated microcapsule adhesive

The colored marking line method makes looseness immediately visible at a glance

Professional torque wrenches are regularly tightened and a "Fastener torque file" is established.

Shocking fact: 80% of structural failure accidents result from the gradual loosening of key bolts.

The fifth dimension: Electrical System

Special precautions for the rainy season

All connectors should be coated with special waterproof silicone grease

The control box is equipped with a humidity indicator card and a desiccant

The ends of the wire harness corrugated tubes are sealed with sealant

Daily maintenance list

Weekly: Clean the pilot controller contacts and check the emergency stop button

Monthly: Test all limit switches and calibrate the Angle sensors

Each season: Conduct insulation resistance tests and update the controller backup data

Intelligent upgrade

Install the BOB-LIFT IoT module for real-time monitoring:

Abnormal vibration frequency of the wiring harness

The contact resistance of the connector changes

Controller temperature curve

Advanced solution: BOB-LIFT Lifecycle Management System

From "Repairing when broken" to "Treating diseases before they occur"

We have established a three-level maintenance system for you

Level 1: Daily Inspection by Drivers (15 minutes per day)

Visual inspection system, scan the code to know the standard

Take photos of abnormal phenomena immediately and upload them to the cloud

Level 2: Regular maintenance by professional technicians (8 hours per month)

Use dedicated diagnostic equipment

Generate the "Equipment Health Checkup Report"

Level 3: In-depth maintenance by the manufacturer (once a year

Spectral analysis of hydraulic oil

Ultrasonic testing of structural stress

Performance recovery adjustment

Maintenance is not a cost but an added value