Track Roller Guidance Systems - Schaeffler Group

1 Track Roller Guidance SystemsTrack Roller Guidance Systems Track rollers, bolts, guideways AccessoriesTrack Roller Guidance SystemsTrack Roller Guidance systemsTrack rollers, bolts, guidewaysAccessoriesAll data have been prepared with a great dealof care and checked for their accuracy. However, no liability can be assumed for any incorrect or incomplete data. We reserve the right to make technical modifications. Schaeffler Technologies AG & Co. KGIssued: 2016, JuneReproduction in whole or in part without our authorisation is Roller Guidance Systems LF are highly suitable, due to their lightweight construction, for applications in handling systemswhere low-noise running, high speeds and long travel distances are required together with low, uniform displacement modular conceptIn order to cover a wide range of requirements using standard components, the Guidance Systems are structured according toa modular concept.

2 The system elements, namely carriages, composite guideways, Track rollers and a precisely matched rangeof accessories can be combined to achieve designs that are precisely matched to the LF are supplied in the form of: economical, lightweight hollow section carriages robust open carriages for high performance Guidance systemsof a simple construction enclosed, compact carriages where Guidance Systems must operate in contaminated environments non-locating bearing carriages for locating and non-locating bearing applications with two Guidance Systems in a parallel arrangement bogie carriages for curved tracks or closed oval and circular Guidance guideways are available as solid and hollow section guideways, with a support rail of high bending rigidity, as a half guideway, a curved guideway element or a flat design. Guideways with slots for toothed racks or toothed belts are also Track rollersProfiled Track rollers without filling slots are used to guide the carriages and support the forces.

3 These double row angular contact ball bearings have an outer ring with a gothic arch profile raceway, are sealed on both sides and are greased for life. They can support axial loads from both sides and high radial forces due to the thick-walled outer spectrum of positive characteristics of our Track Roller Guidance Systems is completed by a comprehensive, precisely matched range of accessories for the system 1 Schaeffler TechnologiesSchaeffler TechnologiesLF 15 PageContentsProduct index ..6 Tab index ..8 Track Roller Guidance systemsTechnical principles ..10 Track Roller Guidance Systems ..40 Track rollers, bolts, guideways ..66 Accessories .. 104 Addresses .. 1246LF 1 Schaeffler TechnologiesPageProduct indexABLubrication and wiper unit for LFL-SF .. wiper for and wiper unit for 116 ABALSide plate for plate for solid profile plate for hollow section plate for flat guideway.

4 Plate for flat half guideway .. plate for guideway with slots .. cover for hollow section guideway .. cover for profiled section 113 LFCLH ollow section carriage, clearance-free .. carriage, adjustable clearance .. carriage, clearance-free ..64 LFEE ccentric bolt with relubrication carriage, clearance-free .. carriage, clearance-free,with heavy duty Track rollers .. carriage, clearance-free,with heavy duty Track rollers .. carriage, carriage, clearance-free,with heavy duty Track rollers .. bearing carriage, clearance-free .. bearing profiled Track Roller .. bearing profiled Track Roller ..84 LFRIP rofiled Track Roller with extended inner bearing Track Roller .. bearing profiled Track Roller without inner ring ..90 Schaeffler TechnologiesLF 17 PageLFSG uideway, solid profile .. , hollow section profile .. , hollow section profile .. , hollow section profile.

5 , solid profile .. , solid profile .. , flat guideway .. , flat guideway .. , flat half guideway .. , flat half guideway .. , flat half guideway .. , profiled section guideway .. with with , corrosion-resistant design .. , curved guideway element .. oval Track with 180 arcs and guideway oval Track with 90 arcs and guideway 102 LFZC oncentric bolt .. bolt with relubrication hole ..88 MUT-nut .. T-nut .. 113 NADSlot closing strip for 123 PAHStop for guideways .. 121 PASTPStop for guideways .. 113 SPPRF ixing 113 VBSG uideway connector for guideways .. 1140001AC170001AC170001AD160001AD160001A 4000001A400121 673121 673 Technical principlesTrack Roller Guidance Systems With hollow section carriage With compact carriage With open carriage With non-locating bearing carriage With bogie carriageTrack rollers Locating bearing Track Roller Non-locating bearing Track rollerBolts Concentric EccentricGuideways With solid or hollow section profile Flat design With support rail With slots Half guideway Curved guideway elementAccessoriesAddresses0001A2820001A 2820001AC1B0001AC1B121 670121 6700001A4010001A4010001A4020001A4020001A 2810001A281 Technical principlesLoad carrying capacity and rating lifeLubricationDesign of bearing arrangementsMountingAccuracyOrdering designationsOperating limitsSchaeffler TechnologiesLF 111 PageTe ch n i ca l p r i n c i p l e sLoad carrying capacityand rating lifePermissible radial loads.

6 12 Permissible radial load under dynamic 12 Permissible radial load under static loading .. 13 Fatigue limit load .. 13 Calculation of rating 13 Rating life of Track 14 Operating life .. 16 Static load safety 17 Minimum 18 Differences in raceway hardness .. 18 LubricationLubrication of guideway raceways .. 19 Lubrication intervals .. 19 Lubrication of Track 19 Design of bearingarrangementsRequirements for the adjacent construction .. 21 Shaft creep .. 21 Displacement force .. 21 Location of carriages and guideways .. 22 Track Roller Guidance systemsin accordance with customer 22 MountingDelivered condition .. 26 Mounting of Guidance system with one guideway .. 26 Mounting of Guidance system with two 27 Mounting of curved guideway elements and oval tracks .. 27 Mounting of bogie 27 AccuracyAccuracy of guideways 30 Ordering example,ordering designationReady-to-fit Systems .

7 34 Closed oval tracks .. 36 Oval Track with two 180 arcs .. 36 Oval Track with four 90 arcs .. 37 Individual components .. 38 Operating limitsOperating temperature .. 39 Velocities .. 39 Acceleration .. 3912LF 1 Schaeffler TechnologiesLoad carrying capacity and rating lifePermissible radial loadsThe thick-walled outer rings of the Track rollers can support high radial loads. If these Track rollers are used against a shaft asa raceway, the outer rings undergo elastic deformation, Figure to rolling bearings supported in a housing bore, Track rollers have the following characteristics: modified load distribution in the bearing. This is taken into consideration by means of the basic load ratings Crw and C0r w used in the calculation of the rating life bending stress in the outer ring. This is taken into consideration by means of the permissible radial loads Frper and F0r bending stresses must not exceed the permissible strength values of the material (due to the risk of fracture).

8 Permissible radial loadunder dynamic loadingFor rotating bearings under dynamic load, the effective dynamic load rating Crw is used. Crw is used to calculate the basic rating permissible dynamic radial load Frper must not be the basic static load rating C0r w is lower than the basic dynamic load rating Crw, C0r w is 1 Deformation of the outer ringwhen used against a flat raceway121 603121 603 Schaeffler TechnologiesLF 113 Permissible radial loadunder static loadingFor bearings under static load, when stationary or with only infrequent motion, the effective static load rating C0r w is w is used to calculate the static load safety factor the same time, the permissible static radial load F0r per must not be addition to the permissible radial load of the bearing,the permissible radial load of the mating Track must also be taken into basic load ratings stated are valid only in conjunctionwith a shaft as a mating Track that is hardened (at least 670 HV) and ground (Ra 0,3).

9 Fatigue limit loadThe fatigue limit load Cur w is defined as the load below which under laboratory conditions no fatigue occurs in the of the rating lifeThe general methods for calculating the rating life are: the basic rating life in accordance with DIN ISO 281 the adjusted rating life in accordance with DIN ISO 281 the expanded calculation of the adjusted reference rating lifein accordance with DIN ISO methods are described in Catalogue HR 1, Rolling Bearings,in the chapter Load carrying capacity and rating 1 Schaeffler TechnologiesLoad carrying capacity and rating lifeRating life of Track rollersIn comparison with Catalogue HR 1, Rolling Bearings, the following values must be exchanged:The carriages LFCL, , LFLL, and bogie carriage LFDL contain four Track rollers equivalent principle applies here. The corresponding par-ameters are taken into consideration in the basic load ratings Cy, C0y, Cz, C0z and the permissible moment ratings M0x, M0y and dynamic load rating in y directionC0yNBasic static load rating in y directionCzNBasic dynamic load rating in z directionC0zNBasic static load rating in z directionM0xNmStatic moment rating about x axisM0yNmStatic moment rating about y axisM0zNmStatic moment rating about z the case of Track rollers with a profiled outer ring, calculation is carried out exclusively by means of the basic rating life to DIN ISO 281.

10 Cr=Crw C0r=C0r w Cur=Cur 2 Load carrying capacityand load directions121 686121 686 Schaeffler TechnologiesLF 115 Other formulae for calculatingthe basic rating lifeRating life for carriageswith four Track rollersLs105mBasic rating life in metresDammRolling contact diameter of Track Roller , see dimension tablesCrw, Cy, CzNEffective dynamic load ratingPrNEquivalent dynamic load (radial load)p Ball: p = 3;needle Roller (non-locating bearing Track Roller or carriage): p = 10/3 LhhBasic rating life in operating hoursHmSingle stroke length for reciprocating motionnoscmin 1 Number of return strokes per minutevm/minMean travel dynamic load in the corresponding load direction(for applications with combined loads, please contact us).16LF 1 Schaeffler TechnologiesLoad carrying capacity and rating lifeOperating lifeThe operating life is the life actually achieved by a rolling may differ significantly from the calculated rating may be due to wear or fatigue as a result of: deviations in the operating data insufficient or excessive operating clearance( Track Roller , guideway) contamination inadequate lubrication operating temperature too high or too low reciprocating motion with very small stroke length,which can lead to false brinelling high vibration load, leading to false brinelling very high shock loads (static overloading) prior damage during to the variety of mounting and operating conditions, the oper-ating life cannot be precisely calculated in advance.