B&R 8LSAB4.I8045J000-4

Synchronous motor 8LS, self-cooling, construction type A

MPN: 8LSAB4.I8045J000-4
Category: Standard motors (8LSA-4; available at short notice)

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12-month warranty (new) · 3-month (used/refurbished)
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What is the B&R 8LSAB4.I8045J000-4?

Synchronous motor 8LS, self-cooling, construction type A, 400 VAC - Number of pole pairs: 5 - Nominal speed: 4500 rpm - Nominal torque: 8.100 Nm - Stall torque: 12.000 Nm - Centering diameter: 110.00 mm, j6 fit - Flange square dimension: 116.00 mm - Smooth shaft d=24.00 k6x50.00 mm, without oil seal - ECI 1119 FS E30-R2, S: 1 - 00: No special option - Efficiency: 96.0

Specifications

General information

Certifications – CE	Yes
Certifications – UKCA	Yes
Certifications – CRA (Cyber Resilience Act)	In preparation
Certifications – UL	cURus E235396; Servo and stepper motors - Component

Motor

Nominal speed n N [rpm]	4500
Number of pole pairs	5
Nominal torque M n [Nm]	8.1
Nominal power P N [W]	3817
Nominal current I N [A]	7.43
Stall torque M 0 [Nm]	12
Stall current I 0 [A]	11.01
Maximum torque M max [Nm]	36
Maximum current I max [A]	53.27
Maximum speed n max [rpm]	6000
Torque constant K T [Nm/A]	1.09
Voltage constant K E [V/1000 rpm]	65.97
Stator resistance R 2ph [Ω]	0.63
Stator inductance L 2ph [mH]	6.4
Electrical time constant t el [ms]	10.16
Thermal time constant t therm [min]	31
Moment of inertia J [kgcm 2]	5.1
Weight without brake m [kg]	7.2

Holding brake

Holding torque of brake M Br [Nm]	0
Mass of brake [kg]	0

Recommendations

ACOPOS 8Vxxxx.xx...	1180
ACOPOSmulti 8BVIxxxx...	110
ACOPOS P3 8EIxxxx...	013X
Cross section for B&R motor cables [mm 2]	0.75
Connector size	1

Downloads & documentation

Official documents from B&R, downloaded directly from the manufacturer.

Data sheets & manuals

8LSA...-4 - Users manual MotorPDF · 13 MB · 1.11 (01/23/2026) - EN

8LSAB4.I8045J000-4: frequently asked questions

When can 8LSAB4.I8045J000-4 be shipped?

8LSAB4.I8045J000-4 is sourced on request — request a quote and we'll confirm the exact availability and shipping timeline for this specific unit.

Can I pick up 8LSAB4.I8045J000-4 in person?

Local pickup from our Groningen, Netherlands warehouse may be possible — contact us before ordering to check availability and arrange a collection time.

Is express delivery available?

Yes — mention it when you request a quote for 8LSAB4.I8045J000-4 and we'll include express shipping options in our reply.

My factory is down and I need this urgently — can you help?

For a critical breakdown, contact us directly at +31 (0)50-7110348 or sales@partnerplc.com — we can look into same-day courier or dedicated taxi/hotshot delivery for 8LSAB4.I8045J000-4, subject to availability and destination.