Railway AAR Type B Bearing Adapters

Description

Railway AAR Type B Bearing Adapters – 4-1/4×8 Bearing

SCHBER Rail offers nearly every size start with the Class B 4-1/4×8 and progresses through the alphabet to the various types of Class G 7×12”, including the K, L and M class adapters according to AAR M-924 specification.

CLASS: B
SIZE(in.): 4-1/4×8
PRODUCT TYPE: N
ITEM NO: 4-1/4×8
MATERIAL : AAR
PRODUCTION METHOD: CASTING
HARDNESS(HB): –
SPECIFICATION: AAR M-924-88 Standard Specification for Journal Roller Bearing Adapters Freight Cars.
CUSTOMER AREA: USA, CANADA,MEXICO

PRODUCTION & MATERIAL
SCHBER Rail could be able to supply the adapter by Forging, Casting Steel, and Casting Iron to meet the requirement of the customer technical drawing. According to AAR M-924, the material could be chose as followings:

Material Code
PM — Pearlitic Malleable Iron
S– Castings Steel
F– Forgings, Carbon Steel
D– High Strength Cast Iron

Material Code should be casted or forged on the product to the related position according to AAR M-924 specification

Reference Material Specifications are as followings:
ASTM A220 GRADE 50005 Standard Specification for Pearlitic Malleable Iron
ASTM A148 GRADE 80-40 Standard Specification for Steel Castings,High Strength,for Structural Purposes
ASTM A536 GRADE 80-55-06 Standard Specification for Ductile Iron Castings
ASTM A236 GRADE C Specification for Carbon Steel Forgings for Railwa
AAR M-126 GRADE C Forgings, Carbon Steel

Note:
N Narrow Type
C The top surface of circular arc quenching
T Thrust stop shoulder surface hardening
CT The top surface of circular arc and Thrust stop shoulder surface hardening