able for low and medium rotational speeds as well as rocking motions As lubricating grease is prepacked with the rollers the bearing can be operated immedi ately after being fitted Table 1 Type of bearing Type Series Metric series Inch series − Heavy duty − Heavy duty TLA …Z TA …Z BA …Z BHA…Z TLAM TAM
Series Type Caged Full complement Open end Closeed end Gease ratained Metric TLAZ TLAM YTL Heavy duty TAZ TAM YT Inch BAZ BAM YB Heavy duty BHAZ BHAM YBH Table 12 Bearing type Series Type Sealed type with cage Oneseal Two seal Closed endone seal Metric TLAU TLA
Shell Type Needle Roller Bearings are light weight bearings with large load ratings They employ a shell type outer ring made from a thin specialsteel plate which is accurately drawn carburized and quenched thus providing the lowest sectional height among the needle roller bearings There are two types of bearings
IRT IRB TA … Z，TLA … Z TAM，TLAM，YT，YTL BA … Z，BHA … Z BAM，BHAM，YB，YBH Remark For Inner Rings for Shell Type Needle Roller Bearings with Seal Inner Rings for Shell Type Needle Roller Bearings da IRT 7938 （ 5╱16） IRB 58 BA 88Z BHA 88Z YB 88 YB 98 YB 108 YBH 108 YB 912 YB 1012
it is recommended that the shaft diameter be increased without decreasing the housing bore diam eter Table 4 Recommended fit Table 5 Calculation example of radial clearance after fitting Type of bearing TA…Z，BA…Z，BHA …Z， TAM，BAM，BHAM， YT，YB，YBH TLA …Z，TLAM，YTL， TLA…UU Housing material
69 Radial Ball Bearings B/L SSRI518 ZZ SSRI518 ZZ BEARINGS LIMITED 4 69 Radial 73 Needle Roller Bearings KOY BH912 BH912 KOYO CORPPORATION OF USA 17 73 Needle 74 Tapered Roller Bearings IKO BHA2016Z BH2016 TOR IKO INTERNATIONAL INCORPORATED 19 74 Tapered
d 65 mm D 140 mm B 33 mm d1 ≈ 8835 mm D2 ≈ 1213 mm r12 min 21 mm Abutment dimensions da min 77 mm da max 883 mm Da max 128 mm ra max 2 mm Calculation data Basic dynamic load rating C 975 kN Basic static load rating C0 60 kN Fatigue load limit Pu 25 kN Reference
d 80 mm D 140 mm B 26 mm d1 ≈ 1014 mm D2 ≈ 1265 mm r12 min 2 mm Abutment dimensions da min 91 mm da max 1009 mm Da max 129 mm ra max 2 mm Calculation data Basic dynamic load rating C 728 kN Basic static load rating C0 55 kN Fatigue load limit Pu 22 kN Reference
