DesignationBearingsizePrincipal dimensionsNumber ofpairs of polesLimitingspeedOperatingtemperaturesdD1D2B1B2––mm––°C (°F)BMD-0123/ZJ662021535551114,5622 000–40 to 150 (–40 to 300)BMD-0123/ZJ862021535551114,5822 000–40 to 150 (–40 to 300)

CodeBearing typeCodeBearing typeCodeBearing type0Double row angular contact ball bearing7Single row angular contact ball bearingQJFour-point contact ball bearing1Self-aligning ball bearing8Cylindrical roller thrust bearingTTapered roller bearingin ac

123normallocated axially1)axial and radial support1)Operating conditionsGuideline values for V-rings ofnitrile rubberfluoro rubberTemperature, °C (°F)dynamic sealing-40 to +100 (-40 to +210)-20 to +150 (-4 to +300)static sealing-40 to +120 (-40 to

(induction hardened and chrome plated rods)Thermoplasticsand rubbersPTFEmaterialsRa0,05 to 0,3 µm(2 to 12 µin.)0,05 to 0,2 µm(2 to 8 µin.)Rz0,4 to 2,5 µm(15 to 100 µin.)0,4 to 2 µm(15 to 80 µin.)Rmax0,4 to 2,5 μm (15 to 100 μin.)Rmr50 to 95

Housing diameterToleranceTotal axial run-outDa, D2H6t1overincl.highlowmax.mmµmµm508019058012022061201502508

Nominaldiameterh6Ⓔh12ⒺK6Ⓔ≤ULULULmmµmµmµm6100–9––+2–710180–110–180+2–918300–130–210+2–1130500–160–250+3–1350800–19––––

Steel/steel and SKF Explorer steel/steel rod endsSteel/bronze rod endsBore diameterRadial internal clearanceBore diameterRadial internal clearancedNormaldC2overincl.min.max.overincl.min.max.mmμmmmμm–121668–6234122020826103412035251001018349356030

Material codeGuide strip for piston applicationsGuide strip for rod applicationsPTFE 292CL = 3,11 (D – t) – 0,8CL = 3,11 (d + t) – 0,8CL = guide strip length [mm]D = cylinder bore diameter or guide ring groove diameter in the head [mm]d = guide ri

Bore diameterHousingUnit seriesMetricInchSeriesMaterialStandardYET 2standard seals (fig. 1)standard grease (VT307)✔–TU .. M (fig. 2)Cast ironISOTU .. FM

Design criteriaWhat to orderBearing series designationOrder exampleBearings can be arranged immediately adjacentto each other in any order and in any orientation.Three single, universallymatchable bearings70 .. DG../P4A3 x 7014 CDGA/P4ABearings can b