• High shock loading

• Oscillating bearings

• Heat cycling

• Scale + moisture contamination

The original Chinese spec historically leaned toward calcium-based or calcium-sulfonate EP greases

What NOT To Use (Common Mistake)

Avoid:

• Standard lithium wheel bearing grease.

• High temp automotive lithium complex only.

Example:

• Mobil XHP 222.

• Mystik JT-6.

They survive heat but are weaker under hammer shock pounding compared to calcium sulfonate.

 Recommend for Your Anyang ST

If this were my hammer:

Tier 1 (Best Performance)

• HammerDuty calcium sulfonate grease.

Tier 2 (Best Availability)

• Traveller Marine Calcium Sulfonate (Tractor Supply).

Tier 3 (Industrial Gold Standard)

• Lubriplate Power Hammer grease.

Advanced Tip (Few Owners Know)

Anyang pitman bearings respond extremely well to:

• Slightly heavier base oil viscosity calcium sulfonate greases.

You get:

• quieter hammer,

• less knock,

• longer life.