Gearboxes designed for the transfer of power or torque can only perform effectively when excessive wear which can occur at high or fluctuating loads, particularly around the reference circle, is avoided. The life of a gearbox depends on the correct selection of the most suitable lubricating oil. The principal function of a gear oil is not just to lubricate bearings ａnd the gears themselves, i.e. to reduce friction ａnd avoid wear but also to provide protection against corrosion, to cool ａnd to seal. The RENOLIN CKC gear oils contain carefully selected base oils ａnd matched additives to protect machinery from undue wear in especially critical boundary friction conditions. RENOLIN CKC products can be classified as CKC lubricating oils according to ISO 6743-6.

The special characteristics of RENOLIN CKC series lubricants are:

• High pressure absorption ａnd excellent wear protection
• Good viscosity-temperature behaviour ａnd excellent low-temperature characteristics
• Good corrosion protection for steel ａnd nonferrous metals
• Good resistance to ageing
• Good compatibility with sealing materials
• Low foaming
• Avoidance of frictional vibration by the use of surface-active additives
• Good demulsification characteristics
• Multipurpose applications

Application:

RENOLIN CKC series oils are recommended for all industrial applications where the machinery manufacturer recommends the use of a CKC type oil. Highly-stressed bearings, joints, pressure spindles, spur ａnd worm drive gears are reliably, effectively ａnd economically lubricated at temperatures of up to 120°C. The use of these oils guarantees the quiet ａnd smooth running of machinery along with optimum operational reliability. The use of these oils also allows drain intervals to be extended. Please consult our Application Engineers for suggestions on how this series of oils can be used to rationalize oil stocks.

RENOLIN CKC		100	150	220	320	460	680
Lubricating oil type
acc. to ISO 6743-6		CKC 100	CKC 150	CKC 220	CKC 320	CKC 460	CKC 680
acc. to DIN 51 502		CLP 100	CLP 150	CLP 220	CLP 320	CLP 460	CLP 680
Characteristics	Unit							Test method
Colour		2	3	4	4.5	5	5	ASTM D 1500
Kinematic viscosity
at 40 °C	mm²/s	94.4	145.6	214	331	468	690	ASTM D 445
at 100 °C	mm²/s	11.1	14.5	18.5	24.6	30.8	36.8	ASTM D 445
Viscosity index		102	98	96	96	95	87	ASTM D 2270
Density at 15 °C	kg/l	0.884	0.89	0.895	0.9	0.903	0.922	ASTM D 1298
Flash point, Cleveland open cup	°C	220	225	230	230	240	245	ASTM D 92
Pour point	°C	– 27	- 24	- 21	- 15	– 12	– 12	ASTM D 97
Neutralization number	mg KOH/g	0.33	0.33	0.33	0.33	0.33	0.33	ASTM D 974
Saponification number	mg KOH/g	1.3	0.84	0.84	0.84	0.84	0.84	ASTM D 94
Sulphate ash	% mass	0.1	0.1	0.1	0.1	0.1	0.1	ASTM D 874
Water content	% mass	not traceable	not traceable	not traceable	not traceable	not traceable	not traceable	ASTM D 95
Insolubles	% mass	not traceable	not traceable	not traceable	not traceable	not traceable	not traceable	DIN 51 592
Demulsification	min	< 20	< 20	< 20	< 20	< 20	< 20	DIN 51 599
Foaming,
seq. I	ml	< 10/0	< 10/0	< 10/0	< 10/0	< 10/0	< 10/0	ASTM D 892 seq. I-III
seq. II	ml	< 10/0	< 10/0	< 10/0	< 10/0	< 10/0	< 10/0	ASTM D 892 seq. I-III
seq. III	ml	< 10/0	< 10/0	< 10/0	< 10/0	< 10/0	< 10/0	ASTM D 892 seq. I-III
Copper corrosion	degree of corr.	1a-100A3	1a-100A3	1a-100A3	1a-100A3	1a-100A3	1a-100A3	ASTM D 130
Rust prevention		pass B	pass B	pass B	pass B	pass B	pass B	ASTM D 665
Ageing behavior,
viscosity increase	%	1	1	1	1	1	1	ASTM D 2893
precipitation number increase	ml	< 0.05	< 0.05	< 0.05	< 0.05	< 0.05	< 0.05	ASTM D 2893
FZG mechanical gear rig test	load stage	12	12	12	12	12	12	DIN 51 354-2
Effect on SRE-NBR 1 seal material acc to DIN 53 538-1 at 100 °C +/– 1 °C after 7 days +/– 2 hours,
relative volume change	%	7	7	7	7	7	7	DIN 53 521 together with DIN 53 505
change in Shore A hardness	Shore	- 3	- 3	- 3	- 3	- 3	- 3	DIN 53 521 together with