Keywords
Citation
(2000), "Rheolube 716R - silent grease", Industrial Lubrication and Tribology, Vol. 52 No. 2. https://doi.org/10.1108/ilt.2000.01852bad.005
Publisher
:Emerald Group Publishing Limited
Copyright © 2000, MCB UP Limited
Rheolube 716R - silent grease
Rheolube 716R - silent grease
Keywords: Bearings, Greases
A new ultra quiet bearing grease from Nye Lubricants Inc has proved itself technically superior to existing products in tests carried out by an independent university evaluation.
Nye Rheolube 716R is the outcome of several years of applied research to identify and minimise noise in bearings. Much of this research was commissioned by Nye in specialist research establishments and laboratories.
RL 716R is an ultra-filtered, low volatility, low noise gel for rolling element bearings. It has excellent lubricity and load carrying capability and is an ideal candidate for low temperature and low torque applications, with an operating temperature range of -54C to +150C.
A complex polyol ester-based rolling element bearing grease with excellent wide-temperature stability and low evaporation loss. Formulated, processed and ultrafiltered to reduce noise in precision bearing applications. Good lubricity, rust inhibition and load-carrying capability. An ideal candidate for low temperature and low-torque applications. Useful temperature range: -54C to 150C.
Typical properties of the base oil
| Viscosity at: | 100C | 4.7 cs |
| 40C | 22 cs | |
| 25C | 31 cs | |
| -40C | 3600 cs | |
| Viscosity index | 135 | |
| Flash point | 250 C | |
| Pour point | < -65 C |
Typical properties of the grease
| Color, appearance | Tan, smooth |
| Unworked penetration | 250 |
| Worked penetration, 60X | 265 |
| Oil separation, 30hr at 100C | 4.5% |
| Evaporation, 24hr at 100C perASTM D-972 | 0.2% |
| Dropping point per ASTM D-2265 | 185 C |
| 0.91 g/cc | |
| Oxidation stability per ASTM D-942: | |
| a. Conditions | 100 hrs @ 100 C |
| b. Pressure drop | 26 kPa |
| Water Washout, 1hr at 38C per ASTM D-1264 | 4.5 % |
| Water washout, lhr at 80C per ASTM D-1264 | 11.7 % |
| Bearing rust test per ASTM D-1743 | Pass |
| Low temperature torque at -40C per ASTM D-1478: | |
| a. Starting torque | 708 gm-cm |
| b. Running torque, 10min | 413 gm-cm |
| c. Running torque, 1hr | 236 gm-cm |
| Four-ball wear per ASTM D-2266: | (1200RPM, 40kg, 75C, 1 hr) |
| Wear scar: | 0.50 mm |
| Cleanliness: | 10-34 microns 500 particles/cc max 35 microns or larger No particles |
For full details and applications information contact Don Haydon at Electromotif Electronic Ltd, 8 Second Cross Rd, Twickenham, Middlesex TW25RF. Tel: +44 (0) 181 296 0650; Fax: +44 (0) 181 296 0649; E-mail: electromotif@cableinet.co.uk