Description
Special synthetic lubricating grease for plain bearings subject to high loads and temperatures
- POLYLUB GLY 791 is based on a synthetic hydrocarbon oil, mineral oil and special lithium soap. It has been designed for friction reduction and wear protection of plain bearings and slideways with metal/metal or plastic/metal material pairings.
- This special lubricant covers a wide range of operating conditions, from low to high speeds and loads, even in the case of fibre-reinforced plastic components and metal/plastic sliding pairings.
- The lubrication of plastics is special in a number of ways . As the behaviour of metals and plastics differs in many aspects, the lubricant’s properties have to be adjusted to the plastic. Compared to many metals, plastics are relatively soft. Solid lubricants, which may achieve a positive effect on many metal friction points, can have a negative or no effect at all on plastic lube points. With the formulation of POLYLUB 791, Klüber Lubrication offers a product which is free of solid lubricant, but covers the many operating conditions mentioned above.
- Owing to the many different plastic compositions, however, we recommend checking their compatibility particularly prior to series application.
- Content: 1kg can
- Available in 400g cartridge, 1kg can, 25kg bucket
Benefits for your application
- For metal/metal and plastic/steel material pairings
- Neutral towards many plastics and elastomers
- Provides good wear protection to fibre-reinforced plastics
- Good corrosion protection of metal mating surfaces
Application
- Vehicles: Seat mechanisms, shock absorbers
- Slideways, plain bearings: For many types of plain bearing designs. POLYLUB GLY 791 prevents stick-slip to a large extent, particularly in applications where normally a hydrodynamic film cannot form.
- Owing to the good damping properties, noise and cracking is considerably reduced.
Application notes
- POLYLUB GLY 791 is applied by brush, spatula or automatic metering systems. The use of central lubrication systems is possible in principle but should be checked in each individual case.
Product data
| NLGI grade, DIN 51818 | 1 |
| Lower service temperature | -40 °C / -40 °F |
| Upper service temperature | 150 °C / 302 °F |
| Color space | orange |
| Worked penetration, DIN ISO 2137, 25 °C, lower limit value | 310 x 0.1 mm |
| Worked penetration, DIN ISO 2137, 25 °C, upper limit value | 340 x 0.1 mm |
| Shear viscosity at 25°C, shear rate 300 s-1, equipment:rotational viscometer, upper limit value | 9 000 mPas |
| Shear viscosity at 25 °C, shear rate 300 s-1, equipment: rotational viscometer, lower limit value | 6 500 mPas |
| Corrosion inhibiting properties of lubricating greases, DIN 51802, (SKF-EMCOR), test duration: 1 week, distilled water |
<= 1 corrosion degree |
| Drop point, DIN ISO 2176 | >= 230 °C |
| Oil separation, based on ASTM D 6184 [FTMS 791 C 321] after 30 h/150 °C | <= 9 % by weight |
| Four-ball tester, wear factor, DIN 51350 pt. 05, 1 h/400 N, wear scar diameter | <= 0.9 mm |
| Minimum shelf life from the date of manufacture – in a dry, frost-free place and in the unopened original container, approx. |
36 months |
Hazard Information (CLP)
Signal word: Warning.
Hazard Statements (H-phrases)
- H317: May cause an allergic skin reaction.
Precautionary Statements (P-phrases)
Prevention:
- P272: Contaminated work clothing should not be allowed out of the workplace.
- P280: Wear protective gloves.
Response:
- P302 + P352: IF ON SKIN: Wash with plenty of soap and water.
- P333 + P313: If skin irritation or rash occurs: Get medical advice/attention.
- P362 + P364: Take off contaminated clothing and wash it before reuse.
Hazardous Components:
- Naphthenic acids, bismuth salts
KLÜBER LUBRICATION MÜNCHEN GMBH & CO. KG, Geisenhausenerstraße 7, 81379 München, GERMANY, +49 89 7876 0, [email protected], www.klueber.com
Alice T. –
Not too big, not too small, just perfect. A friend recommended it to me and I’m thrilled with the purchase. I was skeptical, but now I’ll order regularly. A friend recommended it; I’m very happy with the purchase.
Claudio Q. –
Really good value for money.
gabriel_s –
Works great. Good build quality and reliable.
Hélene –
Packaging was slightly damaged, but product is excellent. Pleasant to use at home. Super fast delivery, thank you.
Cecilia –
Very satisfied, better than I expected. Very fast delivery, thank you. Better than anything else I’ve tried before.
giuseppe_it –
Very good experience. No issues at all so far. Works flawlessly.
arthur_75 –
No issues at all so far. Reliable and stable.
Max –
Super practical. Perfect, nothing to say. Great value for money. Recommended.
Vincenzo E. –
Everything perfect, thank you. Perfect from start to finish. Product arrived well packaged.
william_s –
Exactly what I needed. Feels durable and well built. Great purchase. Exactly what I was looking for.
sammy_rae –
Looks even nicer in real life. The quality pleasantly surprised me. Easy to use, without making a mess.
Abigail –
The quality pleasantly surprised me. Looks even nicer in real life.
harper23 –
Very effective; I noticed a change in just one week. Not too big, not too small, perfect. Perfect for my needs; I’m very satisfied.
jana_ber –
Super fast delivery, thank you. Very effective, I noticed a change in just a week.
Hannes –
Simply excellent. Arrived right away, excellent service. Would buy again.