THK Original Grease AFC Grease

Base oil: high-grade synthetic oil
Consistency enhancer: urea-based

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AFC grease uses high-grade synthetic oil as its base and a urea-based grease as its consistency enhancer, while also featuring special additives. This gives it excellent fretting resistance.

Features

Fretting resistance

It is designed to be highly effective in preventing fretting corrosion.

Wide temperature range

Since a high-grade synthetic oil is used as the base oil, the lubricating performance remains high over a wide range of temperatures, from ‒54℃ to 177℃.

Representative Physical Properties

Item		Representative value	Test method
Consistency enhancer		Urea-based
Base oil		High-grade synthetic oil
Base oil kinematic viscosity: mm²/s (40℃)		25	JIS K 2220 23
Worked penetration (25℃, 60 W)		288	JIS K 2220 7
Mixing stability (100,000 W)		341	JIS K 2220 15
Dropping point: ℃		269	JIS K 2220 8
Evaporation amount: mass% (99℃, 22 h)		0.2	JIS K 2220 10
Oil separation rate: mass% (100℃, 24 h)		0.6	JIS K 2220 11
Copper plate corrosion (B method, 100℃, 24 h)		Accepted	JIS K 2220 9
Low-temperature torque: mN-m (‒20℃)	Starting	160	JIS K 2220 18
Low-temperature torque: mN-m (‒20℃)	Rotational	68	JIS K 2220 18
4-ball testing (welding load): N		3089	ASTM D2596
Service temperature range: ℃		-54 to 177
Color		Brown

Fretting Resistance Test Data (Comparison of Raceway Conditions)

Item	Description
Stroke	3mm
Number of strokes per minute	200min^-1
Total number of strokes	2.88×10⁵ (24 hours)
Surface pressure	1118MPa
Grease quantity	12cm³(replenished every 8 hours)

thk_original_grease_afc_grease_en_img_f01

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