Greasing and pins: joint-specific lubricant, measured delivery and actual wear

Use the actual machine and attachment lubrication charts to identify the point, joint type, required product, amount, interval and service position. Confirm which assemblies are relubricable rather than looking for any place a grease fitting might be added. A chart for another model or an engine-power class cannot establish the correct grease and method for every bearing, pin and automatic line.

The contact arrangement, seals, movement, load and specified replenishment method can differ. Some plain joints have an explicit purge procedure; a rolling bearing may have a measured charge and permitted relubrication route, while a sealed assembly may not be intended for routine replenishment. Keep the actual joint instruction attached instead of applying one workshop habit to every fitting.

SKF’s rolling-bearing lubrication article explains churning after filling and warns that too much grease can maintain high frictional losses and temperatures. This is a specific mechanism, not proof that every hot joint is overfilled. Use the required amount and relevant diagnosis rather than assuming additional grease always reduces temperature or compensates for an unresolved bearing condition.

Retain the full equipment requirement, including relevant base oil, consistency, additives, temperature and delivery-system suitability. One NLGI number or cartridge color cannot establish all of those properties. A machine’s plain pins and an automatic system can require different products, and selecting a familiar multipurpose label is not evidence that every point in the combination is covered.

The SKF lubrication reference distinguishes base-oil and thickener compatibility and calls for appropriate assessment of a proposed change. Matching a color, nominal consistency or one thickener name does not establish that the products work together in the actual application. Use the equipment and lubricant supplier’s transition advice rather than treating a small mixed trial in one fitting as approval.

Use the approved transition procedure for the actual joint, passage, reservoir and delivery system. Fresh grease appearing at one outlet cannot establish that every internal volume or automatic line contains the intended product. Record the old and new identities and completed transition work rather than assuming a brief top-up resolves an unverified compatibility concern throughout the machine.

For an expressly assumed dose of 5 g and a measured delivery of 1 g per stroke, division gives five strokes. At a measured 0.5 g per stroke, the same dose takes ten. These are illustrative delivery calculations, not a five- or ten-stroke machine rule; use an appropriate verified dispensing method and the actual point’s specified quantity and procedure.

Follow that approach only where the specific joint’s instructions require the relevant purge. A measured-charge bearing, sealed assembly or different relief arrangement may need another method. Do not force grease past seals or continue indefinitely because fresh color has not appeared; establish the correct point, service position and required response before increasing pressure or changing the procedure.

Use the prescribed shutdown, isolation, blocking and support arrangement before entering a linkage or articulation danger area. A raised assembly held only by hydraulics is not a secure working position. Clean the fitting and connect as instructed from a safe location; difficult access does not justify reaching past moving equipment or asking another person to move controls while someone is exposed.

HSE’s injection-injury alert describes a fatal incident involving pressurised grease during track tensioning with a hand-powered gun. Keep clear of pressurised releases and follow the actual equipment procedure. Suspected injection requires immediate professional medical treatment; manual power and a small-looking external mark do not establish a harmless puncture or permission to delay care.

Stop and investigate the correct fitting, safe joint position, connection, passage and system condition through the applicable procedure. Do not assume more gun pressure will safely remove every obstruction or loosen a connection to vent it. A blocked point and a failed dispensing tool need different assessment, and neither is resolved by recording the nominal strokes without evidence of delivery.

Grease cannot replace metal lost from a worn pin or bushing. Use the specified clearance measurement and inspection to assess movement, noise, seals and contamination rather than assigning one failed component from a symptom alone. A temporary reduction in noise after lubrication does not establish acceptable wear or eliminate the need for the actual condition-based repair decision.

Record the actual point or circuit, specified product and delivery, completed date and meter, operating conditions and abnormal findings. For automatic systems, verify the required delivery evidence at the relevant points rather than relying solely on a full reservoir. Apply the actual wet-service or wash-down instructions instead of inventing a daily interval or assuming every wash requires the same extra dose.