How to check the running IKO cylindrical roller bearing fault?
SKF single row cylindrical roller bearing code interpretation B20: shrinkage width tolerance CN: common radial internal clearance; and said only through shrinkage or offset clearance range using a combination of F F: and the other letters or offset clearance range including the actual clearance surface four and surface more clearance range four H: narrow clearance range corresponds to the actual clearance range of half L: shrinkage narrow clearance range corresponds to the actual clearance range of half M: shrinkage clearance range corresponds to the actual clearance range between 24 R: and in ISO 5753:1981 standard clearance range should be provided with the circle of letters and grade C2, C3, clearance with C4 C5 with C2: radial internal clearance from ordinary C3: radial internal clearance from common C4: radial internal clearance in the C3 C5: C4 D: modified radial internal clearance, the internal structure of the EC: internal optimization design includes more or more roll and roll / modify / end LAN contact surface hardening of HA3: inner HB1: bainite hardening Of the inner and outer ring HN1: with a special heat treatment on the surface of the inner ring and the outer ring J: stamping steel cage guide roll unhardened K: conical taper of the hole 1:12 M: combined machined brass cage rolling guide MA: combined machined brass cage with the same MA MAS: outer ring guide guide surface lubrication groove MB: combined machined brass cage MBS: and MB in the delineation of same guide surface lubrication grooves ML: integral type turning window type brass cage inner or outer ring guide MP: integral type brass holder with milling groove, groove cutter or broaching groove inner or outer ring guide MPS: and MP the same guide surface lubrication grooves MR: integral type turning window type brass cage roll guide
P: shrink clearance range corresponds to the actual clearance range with more half clearance range of letters and half grade C2, C3, clearance with C4 C5 with the use of C1: radial internal clearance in C2 C2: in general level C3 radial internal clearance: radial internal clearance in general level C4: C3: C5 radial internal clearance radial internal clearance in C4 F: rolling machine double cut Tooth type steel cage FA: outer machine cut double tooth type steel cage FB: inner machine cut double tooth type steel cage HA1: surface hardening of inner and outer ring HA2: outer surface hardening HA4: surface hardening, inner and outer ring rolling HB1: bainite hardening of inner and outer ring HB2: bainite hardening of the outer ring HB3 bainite hardening: K: inner taper hole taper 1:12 KTN9:K + TN9 K30: 1:30 M: conical hole taper combined machined brass cage roll: P4 precision running accuracy to ISO tolerance class P5: 4 dimensional accuracy of running accuracy to ISO tolerance class P6: 5 dimensional accuracy of running accuracy to ISO the tolerance level of 6 SP with special precision machine tool bearings; dimensional accuracy of about P5 about P4 SPCN:SP CN running accuracy of SPC2:SP + C2 + TN9: glass fiber reinforced nylon 66 injection type cage UP: ultra precision machine tool with bearings; dimensions Precision about P4, running accuracy is better than P4 VE900: preliminary standard design W33: outer ring groove three, lubrication hole W33X: outer ring with ring groove six oiling hole
N: the outer ring groove NR: outer ring groove stop ring N1: with the outer end face positioning groove (groove) N2: outer ring end face two positioning grooves each 180 DEG P: glass fiber reinforced nylon 66 injection type cage roll guide PH: glass Fiber reinforced polyetheretherketone (PEEK) injection type cage guide roll of PHA: glass fiber reinforced polyetheretherketone (PEEK) injection type cage outer boot P5: size precision running accuracy to ISO tolerance class 5 P6: size precision running accuracy to ISO tolerance level of 6 S1: by size stabilization processing for temperature up to +200 DEG C bearing ring by S2: the size of stabilizing treatment for temperature up to +250 DEG C bearing TN9: glass fiber reinforced nylon 66 injection type cage VA301: railway vehicle traction machine with VA305:VA301 bearings and special inspection program of VA350: railway axlebox bearing VA380: with EN 12080:1998 standard 1 VA3091:VA301 +VL0241 VC025: railway axlebox bearing with special wear-resistant roller bearings for the serious pollution of the environment the application of VL0241: in the outer surface of the alumina coating with insulating capacity of up to 1000 V DC VL2071: inner appearance With an alumina coating insulation capacity of up to 1000 V DC VQ015: ball raceway ring allows for increased coronary SKF double row cylindrical roller bearing B code interpretation: the current standard design with double tooth type brass holder BK:B + K CN: ordinary radial internal clearance; and only through said shrinkage or other offset clearance range letter combinations using H: shrinkage clearance range corresponds to the actual clearance range part L: shrinkage clearance range corresponds to the actual clearance range part M: shrinkage clearance range corresponds to the actual clearance range between 24
