Sprag-Type Freewheel-Clutches

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Proper lubrication with only qualifiedlubricants is the prerequisite for achievementof highest efficiency of our highquality clutches.Only with use of oil or grease lubricantsas specified in Tables 1 to 3 GMN willwarrant their freewheel-clutches andtheir trouble free function.GMN will supply on request, factorylubricant specifications for your specificoperating temperature range.Please consult with our technical staff ifoperating temperatures are in the upperor lower temperature tolerance range.Whenever possible, use only oil or oilmist lubrication rather than greaselubrication.For oilmist lubrication – please use oilsas per table 1 e.g. HM 10 or HM 32.Pleas note:The use of lubricants with additivesthat decrease the coefficient offriction, i.e. MoS2 or graphite is notpossible.OilOperating Temperature Range at GMN ClutchTable 1 – 15 °C to + 30 °C 15 °C to 90 °C 60 °C to 120 °C+ 5 °F to + 86 °F 59 °F to 194 °F 140 °F to 248 °FOil Type Hydraulic Oil HM 10 Hydraulic Oil HM 32 Hydraulic Oil HM 100GMN Sprag-Type-ClutchesLubricationOperating Temperature Range at GMN ClutchTable 2 – 15 °C to + 30 °C 15 °C to 90 °C 60 °C to 120 °C+ 5 °F to + 86 °F 59 °F to 194 °F 140 °F to 248 °FOil Type – HD-Motor Oil SAE 10 W HD Motor Oil SAE 30ATF DEXRON II D or IIIOil lubricants described in Table 2 arefrom the automotive sector. Theselubricants can easily be obtained atViscosity-TemperatureDiagram for GMN Oilautomotive supply outlets and areexcellent for the lubrication of ourfreewheel-clutches.Lubricant qualification:HD-Motor Oil SAE 10 W or SAE 30 isequal to “API-Service SF/CC” and“MIL-L 46152 B”.Viskositymm 2 /s (cSt)200100HM 32504030HM 10HM 100 HM SAE 30ATF Dexron II D or III2015HD SAE 10 WTemperature°C10987-40 -30 -20 -10 0 +5 10 20 30 40 50 60 70 80 90 100 110 120130 14024
Important: Oils shown in table 1 andtable 2 are only to be mixed with oils ofthe same qualification. That means ATFoil with ATF oil. HD-motor oil with HDmotoroil, hydraulic oil with hydraulic oil;but not ATF oil with motor oil or hydraulicoil etc.If there is any change of oil from onequalification to the other it is absolutelynecessary to clean the freewheel-clutchand mating parts with cleaning or testbenzine. Never use trichloroethylene orperchlorethylene.The oil level should be in relation to thesize of the freewheel-clutch. In normalinstallation position, not operating, onehalf of the clutch should be submergedin oil.At high values of indexing frequency oridling speed the amount of oil should bereduced. Just one third of the clutchshould be submerged.Our double sealed freewheel-clutches(series FND and FPD) are filled with an oilfor operating temperature range 15 °C to90 °C if not specially ordered.For oil mist lubrication systems GMNrecommends ample clean oil, free ofmoisture, be sprayed directly ontoclutches.Open or unsealed housings should beinspected frequently – at least dayly – forproper lubrication level. The amount ofthe refill depends on the specific design,the clutch is installed in and on its size.GreaseGreases from different manufacturesmay not be compatible. Consult withGMN for proper lubricationrecommendationsThere is no universal grease for allservice and operating conditions. Table 3below lists suitable grease types andcharacteristics for GMN freewheelclutches.Table 3Table 3 shows a selection of thefavoured greases and their specifications.The greases belong to the followingconsistance classes as per germanstandards DIN 51818: NLGI 2 (exceptKlüber Bio BM 72-501 – NLGI 1).For regular working conditions the firsttwo grease types are the perfect choice,as the use of Klüber Bio HB 72-102 isrecommended for very specialconditions.It is very important to take care for theright amount and proper distribution ofthe grease. We recommend to fill about60% of the free space inside the clutchwith grease by using a detergent forgetting the grease equally distributed.Producer Grease Saponifica- Oilbase Operating CharacteristicstionTemperature atGMN FreewheelClutchesKlüber ISOFLEX Lithium Ester/ – 30 °C…+130 °C Deep temperature and longterm grease withLubrication LDS 18 Mineral – 22 °F …+266 °F high resistance to aging and corrosion.Special AKlüber Klüberbio Polyurea Ester – 20 °C…+120 °C Biological grease especially for overrunningLubrication BM 72-501 – 4 °F …+248 °F and backstopping.Klüber Klüberbio Polyurea Ester – 40 °C…+180 °C Full-Synthetic grease especially for overrunningLubrication HB 72-102 – 40 °F …+356 °F and backstopping.GMN Sprag-Type-ClutchesLubricationGMN only uses ball and roller bearinggrease which is continually monitored formaximum quality and maximum clutchlife.GMN can not endorse or guarantee thequality of lubricants, purchased by theircustomers to be used with GMNclutches.Sealed ball bearing clutches “RS” and“2RS” are shipped grease lubricated withgrease type Isoflex LDS 18 Special A, ifnot specially ordered.25
Page 2 and 3: QUALITÄTS-MANAGEMENTDie Qualitäts
Page 4 and 5: Series 400 - 8000: 2 Product Lines
Page 6 and 7: GMN Sprag-Type-ClutchesBasic Inform
Page 8 and 9: Transmittable Torque based on wall
Page 10 and 11: F NaF Nifriction contactFRFunctiona
Page 12 and 13: Freewheel-Clutchas an insert elemen
Page 14 and 15: FE 400FE 400 ZFE 400 Z2Mounting spa
Page 16 and 17: FR 400FP 400FPD 400122734GMN Sprag-
Page 18 and 19: Please note also ourflyer Ball Bear
Page 20 and 21: GMN Sprag-Type-ClutchesTolerance Ta
Page 22 and 23: IntroductionMounting InstructionsSp
Page 26 and 27: Mounting Series 400 and Series 8000
Page 28: Sprag-TypeFreewheel-ClutchesPrintin

Sprag-Type Freewheel-Clutches

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