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AAR Standard C, D, E, F Bearing Adapter connectiong Railway Bogie Axle

AAR Standard C, D, E, F Bearing Adapter connectiong Railway Bogie Axle

Product No.：202662112642
Price：nogotiation
Material：M201
Standard：AAR M-924 standard
mould charge：yes
Production time：60days
weight：30
Package：Wooden Box
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AAR Journal Roller Bearing Adapter for Railway Wagon Bogie

1. Product Description

what is a dapter ？ As a premium component in AAR standard freight car trucks, our Journal Roller Bearing Adapter guarantees flawless load transfer and critical structural alignment between the axle bearing assembly and the bogie side frame under maximum load capacities .The AAR Journal Roller Bearing Adapter plays a pivotal role within the assembly of railway wagon bogies, serving as a crucial component in ensuring the efficient, smooth, and safe operation of rail vehicles. Strategically situated between the rolling bearings and the side frame guide pedestal, this adapter serves multiple essential engineering functions.

The Bearing Adapter for Railway Wagon Bogie is not merely a mechanical component; it is a vital link that ensures the harmony of various dynamic forces. It facilitates seamless motion, uniform load distribution, and overall structural safety within the rail transport ecosystem. Its indispensable role underscores its significance in keeping heavy-haul rail vehicles securely on track, ensuring operational safety, and delivering a comfortable journey for freight and passenger transport alike.

2. Product Parameters

Our manufacturing facility provides fully customized casting and forging solutions tailored to your specific mechanical drawings.

Parameter	Specification Details
Product Name	Railway Bearing Narrow Adapter / Journal Roller Bearing Adapter
Primary Materials	Carbon Steel ZG230-450, B, B+, C / ASTM A220 Gr. 50005 / ASTM A148 Gr. 40-80 / ASTM A236 / AAR M126
Standard Sizes	AAR 5×9 / 5½×10 / 6×11 / 6½×12 / 6½×9 / 6×8 / 7×12
Dimensions	Custom-manufactured strictly per customer technical drawings
Unit Weight Range	7.5 kg – 35.0 kg
Production Process	Precision Cast Steel, Ductile Iron Casting, or High-Strength Forging
Surface Hardening	Induction Quenching / Localized Heat Treatment (Crown & Thrust Shoulder)
Packaging	Export-Standard Sea-Worthy Wooden Packages / Pallets
Applications	Freight Trains, Heavy-Haul Wagons, Locomotives, Passenger Cars

3. AAR Standard Adapter Size Matrix & Material Cross-Reference

The following systematic matrix identifies standard AAR narrow-type bearing adapters along with their certified international steel grades, production methods, and wear-resistant hardening configurations.

Understanding Technical Configuration Suffixes:

N (Narrow Type): Standardized narrow-type adapter geometric contour.
C (Hardened Crown): The top surface of the circular arc undergoes precise induction quenching for wear resistance.
T (Hardened Thrust): Thrust stop shoulder surfaces are localized-hardened to withstand lateral forces.
CT (Double Hardened): Combined configuration featuring both top circular arc surface and thrust stop shoulder surface hardening.

Standard Product Selection Table:

No.	Class	Journal Size (in.)	Item Reference Configurations	Material Standards	Production Method
1	C	$5 \times 9$	5×9 N / 5×9 NC / 5×9 NT / 5×9 NCT	ASTM A220 Grade 50005	Casting
2	D	$5\frac{1}{2} \times 10$	5½×10 N / 5½×10 NC / 5½×10 NT / 5½×10 NCT	ASTM A148 Grade 40-80	Casting
3	E	$6 \times 11$	6×11 N / 6×11 NC / 6×11 NT / 6×11 NCT	ASTM A236 Grade C	Casting
4	F	$6\frac{1}{2} \times 12$	6½×12 N / 6½×12 NC / 6½×12 NT / 6½×12 NCT	ASTM A236 Grade C	Forging
5	K	$6\frac{1}{2} \times 9$	6½×9 N / 6½×9 NC / 6½×9 NT / 6½×9 NCT	AAR M126 Grade C	Forging / Casting
6	G	$7 \times 12$	7×12 N / 7×12 NC / 7×12 NT / 7×12 NCT	High-Grade Carbon Steel / ZG230-450	Casting

4. Key Engineering & Manufacturing Advantages

4.1 Advanced Surface Hardening Technology (C / T / CT Configurations)

To combat severe steel-on-steel friction within the bogie pedestal guide, our adapters feature precise induction heat treatment. Hardening the crown (C) prevents premature sagging and flattening under high vertical forces, while hardening the thrust shoulders (T) mitigates severe wheel-flange lateral wear during tight track cornering. This dramatically extends the maintenance-free cycle of the wheelset.

4.2 Absolute Field Interchangeability

All units are cast or forged using premium tooling and machined to strict tolerances aligned with AAR M-924 standards. This guarantees that whether you are replacing parts on a locomotive, a passenger car, or a heavy-haul mining wagon, our adapters drop effortlessly into the side frame guides with zero field modifications required.

4.3 OEM & Tailored Customization Services

We offer comprehensive Customized Services (OEM/ODM). Our foundry can adapt chemical compositions (such as switching from standard carbon steel ZG230-450 to tailored micro-alloyed steel) and geometric layouts according to your local rail network's climate, axle load, and specific design blueprints.