Motor Parts & Accessories | Capacitors, Bearings & More

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Why Choose E-Motor Nations for Parts & Accessories?

When a motor fails, the fix isn’t always a full replacement, often it’s a wear component (bearing, capacitor, brush, switch, fan, or connection hardware). E-Motor Nations brings together a large selection of motor accessories so you can find compatible parts quickly and keep critical equipment online.

A broad catalog built for real-world maintenance

The Accessories collection covers the essentials technicians actually need: run/start capacitors, deep-groove bearings, terminal blocks, fan blades, brush kits, brake kits, and moreideal for maintenance teams, contractors, and repair shops.

Easy compatibility checks

Motor parts are all about fit and rating: µF and VAC for capacitors, ID/OD/width for bearings, shaft diameter/length, rotation and mounting details. With product specs visible in listings, you can confirm key dimensions before ordering.

Trusted brands and industrial-grade consumables

From recognized component brands (e.g., bearing and motor accessory lines) to maintenance consumables like electric motor bearing grease, you can source parts designed for continuous duty and shop-floor conditions.

Canadian supplier, fast shipping, less downtime

E-Motor Nations ships across Canada so you can reduce lead times when a line is down or a unit won’t start whether you need a single capacitor or a set of bearings for scheduled maintenance.

Key Takeaways : Parts & Accessories at E-Motor Nations

Fix the real cause of failure

Many “motor failures” come down to replaceable components (bearings, capacitors, brushes, switches, fans, connections) rather than the entire motor.

Make compatibility your #1 filter

Match ratings and dimensions first (µF/VAC, bearing size, shaft specs, mounting/rotation) to avoid returns and repeat downtime.

One place for parts, consumables, and hardware

From repair components to lubrication and accessory hardware, the catalog supports both urgent fixes and preventive maintenance.

Expert support when you need it

If you’re unsure what you need, E-MOTOR NATIONS specialists help you choose the best match before you order.

What to look for when choosing motor parts & accessories

Start with the symptom and the motor data (nameplate + physical measurements). Then validate the part type:

Capacitors: match capacitance (µF), voltage rating (VAC), and case style/size (oval/round) for proper starting and running.

Bearings: match inner diameter / outer diameter / width and select sealing and clearance appropriate to heat and load.

Electrical connections: verify amp rating, terminal geometry, and enclosure fit (e.g., terminal blocks).

Mechanical items (shafts, brackets, bases, fans): confirm dimensions, rotation, bore, and mounting pattern.

Understanding compatibility, ratings, dimensions, and “drop-in” fit

To avoid ordering the “almost right” part, use this quick checklist:

Exact ratings (µF/VAC, amps, VDC where applicable)

Exact dimensions (bearing size, shaft diameter, fan diameter/bore, bracket holes)

Motor frame and application context (HVAC vs industrial duty, frequent starts, heat, contamination)

Like-for-like replacement when possible (same spec, improved quality only when compatible)

This is the fastest way to get a reliable repair without rework.

How to match a replacement part to your existing equipment

Identify the part number from the old component (when available).

Measure critical dimensions (bearing sizes, shaft diameters, fan diameter/bore).

Match electrical ratings (especially capacitors and terminal components).

If you’re unsure, use photos and motor details to cross-check with support before ordering.

Popular parts & accessories in this collection

Here are common categories you’ll find in Accessories:

Capacitors (Run / Start) for single-phase motors and HVAC equipment

Bearings (sealed / deep groove, etc.) for smooth operation and longer motor life

Brush kits & electrical wear parts for DC and certain specialty motors

Terminal blocks & connection hardware for safe, clean wiring repairs

Fans & cooling accessories to prevent overheating (rotation and diameter matter)

Brake kits / gearbox accessories for driven systems requiring stopping or torque handling

Lubricants and maintenance consumables (e.g., electric motor bearing grease)

FAQ

How do I know which capacitor my motor needs?

Check the old capacitor label for µF and VAC, then match the same values and the same form factor (oval/round) and mounting space. You can also ask directly to one of our experts if you need support.

What’s the difference between a start capacitor and a run capacitor?

Start capacitors help the motor start (high starting torque). Run capacitors stay in the circuit during operation to improve efficiency and running performance.

Can I use a higher voltage-rated capacitor than the original?

In most cases, yes (e.g., replacing 370VAC with 440VAC) as long as the µF rating matches and it physically fits. (Avoid lowering the voltage rating.)

How do I choose the right motor bearing size?

Bearings must match the exact ID × OD × width of the original bearing. Many listings show these dimensions (e.g., deep groove sealed bearings). Also, you can refer to the original bearing number.

What are the signs of a failing motor bearing?

Common signs include rumbling noise, vibration, overheating near the end bells, and increased current draw.

When should I replace motor brushes?

Replace brushes when worn near the wear line/limit, if there’s sparking, irregular commutation, or intermittent operation, then confirm the correct brush kit for your frame/model.

Sources

Sources

E-Motors Nations – Electric Motors collection (catégories & usages)
https://www.emotornations.com/collections/electric-motors

ABB – Motor Nameplate Guide (lecture de la plaque signalétique, puissance, tension, duty, etc.)
https://library.e.abb.com/public/8c335e0214cb48e0b8a567a95d75f1bc/Motor_nameplate_guide.pdf

NEMA – MG-1 Motors and Generators (terminologie, types d’enveloppes ODP/TEFC, standards nord-américains)
https://www.nema.org/standards/view/nema-mg-1-motors-and-generators

Schneider Electric – Duty Cycle S1–S4 Explained (définition des cycles de service)
https://www.se.com/ww/en/faqs/FAQ000221891/

Grainger – Electric Motor Buying Guide (critères pratiques de sélection : application, alimentation, environnement)
https://www.grainger.com/know-how/equipment-information/kh-electric-motor-buying-guide

EASA – Electric Motor Troubleshooting Basics (recommandations fiabilité & environnement)
https://www.easa.com/

ABB – Motor Nameplate Guide
Pour le rôle de la nameplate, les données de puissance/tension/vitesse/duty.
https://library.e.abb.com/public/8c335e0214cb48e0b8a567a95d75f1bc/Motor_nameplate_guide.pdf

NEMA – MG-1 Motors and Generators
Pour les définitions normalisées (frame sizes, synch speeds, types d’enveloppes, etc.).
https://www.nema.org/standards/view/nema-mg-1-motors-and-generators

Grainger – Electric Motor Buying Guide
Pour les impacts pratiques d’une mauvaise tension/phase, le dimensionnement et la fiabilité.
https://www.grainger.com/know-how/equipment-information/kh-electric-motor-buying-guide

EASA – Electric Motor Troubleshooting Basics
Pour les risques de surchauffe, de défaillance prématurée et les bonnes pratiques de remplacement.
https://www.easa.com/

Fitzgerald & Kingsley’s Electric Machinery – manuel universitaire de référence sur les machines AC et DC, leur principe et leurs usages.
https://www.mheducation.com/highered/product/fitzgerald-and-kingsleys-electric-machinery-umans.html?viewOption=student

Stephen J. Chapman – Electric Machinery Fundamentals – manuel qui détaille notamment les différences d’applications entre moteurs AC et DC et le rôle des variateurs.
https://books.google.com/books/about/Electric_Machinery_Fundamentals.html?id=wyHAuQAACAAJ

Marathon Electric – Electric Motors (portfolio AC & DC pour l’industrie) – illustre que la plupart des applications générales utilisent des moteurs AC, les DC étant réservés à des besoins spécifiques de contrôle.
https://www.marathonelectric.com/electric-motors

WEG – Electric Motors / Specification Guides – documentation fabricant sur les familles de moteurs AC, DC et leurs domaines d’application.
https://static.weg.net/medias/downloadcenter/ha0/h5f/WEG-motors-specification-of-electric-motors-50039409-brochure-english-web.pdf

E-Motors Nations – Electric Motors collection – pour l’alignement avec les catégories réellement vendues (majoritairement AC pour HVAC, pompes, compresseurs, etc.).
https://www.emotornations.com/collections/electric-motors

IEC 60034-1 – Duty cycle classification (S1, S2, S3, S4, etc.)
Résumés / applications :
https://electrical-engineering-portal.com/10-duty-types-three-phase-asynchronous-motors
https://www.engineeringtoolbox.com/iec-duty-cucles-d_739.html
https://www.electricalje.com/2018/06/motor-duty-class-and-its-classification.html

IEC 60034-30-1 – IE efficiency classes (IE1, IE2, IE3, IE4)
ABB technical note on IEC 60034-30-1: https://library.e.abb.com/public/db64d153e3c346938e18916e66fb1d0d/9AKK107319%20EN%2005-2018_20848_ABB_Technical_note_IEC_60034_30_1.pdf
AVSLD summary of IEC 60034-30-1: https://avsld.com.sg/iec-60034-30-standard-on-efficiency-classes-for-low-voltage-ac-motors/

NEMA Premium® & DOE motor efficiency rules
NEMA Premium program: https://www.nema.org/standards/Technical/NEMA-Premium
DOE / NEMA joint recommendations and updated motor rule:
https://www.nema.org/news-trends/view/department-of-energy-issues-motor-efficiency-standards-based-on-recommendations-from-joint-stakeholders
https://www.pumpsandsystems.com/what-users-should-know-about-department-energys-latest-motor-rules

EASA – Motor protection & reliability
Resource library – motor protection: https://easa.com/resources/resource-library/category/motor-protection-2
“Getting the Most From Your Electric Motors” (reliability & protection focus): https://easa.com/resources/resource-library/increasing-motor-reliability

ABB – How to read a NEMA motor nameplate (rôle des infos de plaque pour installer, réparer ou remplacer un moteur)
https://new.abb.com/news/detail/80778/how-to-read-a-nema-motor-nameplate

NEMA – MG-1 Motors and Generators (référentiel de standards NEMA pour moteurs, nameplate, tensions, frames, etc.)
https://www.nema.org/docs/default-source/standards-document-library/ansi_nema-mg-1-2016-contents-and-foreword.pdf

HECO – NEMA Standards Electric Motor Frame (ebook sur la lecture des NEMA frame sizes pour le remplacement)
https://hecoinc.com/wp-content/uploads/2023/08/NEMA-standards-electric-motor-frame-Ebook-V3.pdf

Regal Rexnord – Motor Frame Size Chart (Quick Reference)
https://www.regalrexnord.com/products/regal-rexnord-electric-motors/quick-reference-motor-dimensions

EASA – Electric Motors: Repair or Replace? (outil décisionnel sur réparer vs remplacer, utilisé comme cadre “industrie”)
https://universalrewind.com/wp-content/uploads/2023/07/EASA_RepairReplace_SalesTool_0821.pdf

EASA – Electromechanical Resource Center
https://easa.com/erc

E-Motor Nations – Electric Motors collection (filtres par HP, RPM, voltage, frame, etc.)
https://www.emotornations.com/collections/electric-motors

Accessories