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B&R 8MS Synchronous Motors

8MSA4S.R0-31

Price and Availability Inquiry

The 8MSA4S.R0-31 is a self-cooled three-phase synchronous servo motor in size 4 short construction with resolver feedback and a 19 mm shaft.

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QuotationCurrent commercial details

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For faster service, please include the model 8MSA4S.R0-31 and required quantity in your inquiry.

8MSA4S.R0-31

Technical Specifications

Official identification, electrical, interface, installation and ordering data for the 8MSA4S.R0-31 resolver-feedback three-phase synchronous motor.

01Product IdentityOfficial model identification

ManufacturerB&R

Article Number8MSA4S.R0-31

Product DesignationResolver-Feedback Three-Phase Synchronous Motor

Product Family8MS Synchronous Motors

02Motor ConstructionPublished mechanical configuration

MOTOR PRINCIPLEThree-phase synchronous

COOLINGSelf-cooled

FRAMESize 4, short length

CONSTRUCTIONType A

03Feedback & ShaftResolver and output geometry

FEEDBACK OPTIONResolver R0

SHAFT DIAMETER19 mm k6

SHAFT LENGTH40 mm

CENTERING DIAMETER95 mm j6

04Mounting DimensionsOfficial outline data

OVERALL LENGTH K0155 mm

FLANGE FACE97 × 97 mm

MOUNTING HOLES4 × 9 mm

OPTION CHECKVerify complete suffix -31

8MSA4S.R0-31 Product Support

Frequently Asked Questions

Product-specific compatibility, application, installation, commissioning and ordering guidance for 8MSA4S.R0-31.

Which feedback device is fitted to this motor?

The R0 option identifies resolver feedback; the drive must support the corresponding resolver interface and wiring.

Which shaft dimensions matter for coupling selection?

The standard shaft is 19 mm k6 in diameter and 40 mm long, so the coupling bore, keying and load limits must be checked.

How large is the mounting interface?

The published flange face is 97 × 97 mm with a 95 mm j6 centering diameter and four 9 mm mounting holes.

Can this motor replace another size 4 motor without checks?

Not automatically. Confirm length, shaft, flange, feedback, connector orientation, winding data and the full option suffix.

How should alignment be handled during installation?

Use the centering pilot, align the coupling precisely and avoid forcing the shaft or transmitting excessive radial and axial load.

Which drive parameters must be commissioned?

Enter the motor data and resolver configuration from the nameplate and approved motor file, then verify rotation and feedback polarity at low speed.

Which ordering evidence is required?

Send model 8MSA4S.R0-31, the complete motor nameplate, connector photographs and the installed drive and cable references.

Order Fulfilment

Payment and Worldwide Delivery

AMIKON coordinates product verification, commercial confirmation, packing and international shipment for industrial automation parts. Each order is handled according to the confirmed model, quantity and delivery destination.

Order Confirmation

Model, part number, quantity, availability, lead time and payment terms are confirmed in the formal quotation or proforma invoice.

Product Preparation

The item reference is checked before dispatch. Packaging is selected to protect industrial components during international transport.

International Shipping

Shipment can be arranged through DHL, FedEx or UPS according to the destination, parcel size and confirmed order requirements.

Dispatch and Tracking

Dispatch information and the available tracking reference are shared after the shipment has been collected by the selected carrier.

AMIKON Service Standards

Support at Every Stage of Your Order

Clear assistance from initial product identification through dispatch and after-sales communication.

Product IdentificationThe manufacturer, complete model and part-number details are reviewed before quotation.

Dedicated Sales ContactLisa Lin provides quotation and order communication through email and WhatsApp.

Order DocumentationCommercial, packing and shipment details are supplied according to the confirmed order.

After-Sales CommunicationFor support, provide the order reference, product label, fault description and clear photos.

Pre-Dispatch VerificationThe product label, model reference, quantity and visible condition are checked against the confirmed order before packing.

Global Logistics CoordinationInternational express or freight arrangements are coordinated according to the destination, shipment size and confirmed delivery terms.

Important delivery information

Product availability, dispatch date, freight cost and delivery time depend on the confirmed order and destination. Packing lists, commercial invoices and available origin documentation can be prepared according to the confirmed order. Please contact AMIKON for current commercial and shipping details.

AMIKON Professional Services

Warranty, Sourcing and Global Export Support

With 20 years of experience in industrial automation, AMIKON supplies discontinued and hard-to-find DCS, PLC and TSI spare parts to customers worldwide.

01 · WARRANTY

12-Month Product Warranty

Products supplied by AMIKON include a standard 12-month warranty. Warranty handling is based on the confirmed order, product label, fault information and supporting photos or videos.

02 · SPECIALIST SOURCING

Discontinued and Hard-to-Find Parts

Our sourcing service focuses on industrial automation DCS, PLC and TSI spare parts, including obsolete, discontinued and scarce models required for maintenance and replacement projects.

03 · GLOBAL EXPORT LOGISTICS

One-Stop International Shipping

AMIKON can coordinate domestic export customs procedures and arrange international express or sea freight. Packing lists, commercial invoices and available origin documentation can be prepared according to the confirmed order.

04 · TECHNICAL INFORMATION

Model and Specification Support

We assist customers with model identification, specification review, compatibility checks and Datasheet or manual searches. Support also includes distinguishing earlier and later model versions and checking whether a submitted model reference is complete and correctly written.

05 · PRE-DISPATCH CHECK

Product Verification Before Shipment

The product label, complete model, part number, quantity and visible condition are reviewed against the confirmed order before packing.

06 · INDUSTRIAL PACKAGING

Secure Packing for International Transit

Packaging is selected according to the component type, shipment size and transport method to support safe international handling.

07 · ORDER DOCUMENTATION

Commercial and Shipping Documents

Commercial invoices, packing lists and available origin information can be prepared according to the confirmed order and destination requirements.

08 · AFTER-SALES SUPPORT

Responsive Order Follow-Up

For order support, customers can provide the order reference, product label, issue description and clear photos for review by the AMIKON team.

Need help identifying a spare part?Send the complete manufacturer, model, part number and clear product-label photos to Lisa Lin.

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Request model availabilitySend the complete model and required quantity to AMIKON for quotation.

International enquiriesShipping options and lead time are confirmed according to destination and order details.

Hot Tags : 8MSA4S.R0-31 B&R synchronous motor resolver servo motor 8MS size 4 motor 19 mm servo shaft industrial servo motor

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B&R 8MSA4S.R0-31 Resolver-Feedback Synchronous Servo Motor

8MSA4S.R0-31

20 Years of Experience in Industrial Automation Supply

8MSA4S.R0-31

Technical Specifications

Frequently Asked Questions

Which feedback device is fitted to this motor?

Which shaft dimensions matter for coupling selection?

How large is the mounting interface?

Can this motor replace another size 4 motor without checks?

How should alignment be handled during installation?

Which drive parameters must be commissioned?

Which ordering evidence is required?

Payment and Worldwide Delivery

Order Confirmation

Product Preparation

International Shipping

Dispatch and Tracking

Support at Every Stage of Your Order

Warranty, Sourcing and Global Export Support

12-Month Product Warranty

Discontinued and Hard-to-Find Parts

One-Stop International Shipping

Model and Specification Support

Product Verification Before Shipment

Secure Packing for International Transit

Commercial and Shipping Documents

Responsive Order Follow-Up

Recommended Parts

Related Products