Ankarsrum Electric Motors & Worm Geared Drives: KSV 5035, PM4228, KSV 4030 & BLDC Industrial Motors

Supply industrial electric motors, permanent magnet DC (PMDC) worm geared motors, and brushless DC (BLDC) drives from Ankarsrum Electric Motors AB (Sweden): KSV 5035, PM4228, PM42LS, KSV 4030, and PM4220 series (12–42 V DC), KS42 universal motors (up to 2200 W), BL5440 IR, BL3525 OR, BL 4625 brushless drives, and SP 3016 exhaust fan motors.

Ankarsrum KSV 5035 Series PMDC Worm Geared Motors (12–42 V DC, IP20)

Permanent magnet DC worm geared motors of the KSV 5035 series featuring a 50 mm armature diameter and 35 mm stack length are engineered for MIG/MAG welding wire feeders, industrial automation, and traction drives.

Operating at 12–42 V DC with worm gear ratios of 24:1 and 49:1, no-load speed of 35–250 rpm, insulation class F, IP20 protection, 1.7 kg net weight (1.8 kg packed), and left-hand output shaft.

12–42 V DC supply, 50 mm armature diameter, 35 mm stack length, 24:1 or 49:1 gear ratio, 35–250 rpm speed
Optional optical encoder (28 D, 60 D&S, or 100 D&S cpr), tachometer generator, and internal cooling fan
Industrial connectors TE/AMP 735075 and 5-160465-2, insulation class F, IP20 rating, 1.7 kg weight (1.8 kg)
Standard variants KSV 5035/376, KSV 5035/387, KSV 5035/475, KSV 5035/558, KSV 5035/603, KSV 5035/701, and KSV 5035/759 replaced by PM4228/121

Ankarsrum PM4228 & PM42LS Modular Geared Motors (12–42 V DC, 150–320 rpm)

The modular PM4228 worm geared motor platform (42 mm armature diameter, 28 mm stack length) and the lightweight PM42LS version with an engineering polymer gearbox housing serve welding wire feeders, dosing pumps, and door actuators.

Rated for 12–42 V DC, gear ratios of 21:1, 24:1, 37.5:1, and 69:1, speeds of 150–320 rpm, IP20 protection, class F insulation, 1.0 kg net weight (1.2 kg packed), left or right shaft.

12–42 V DC input, 42 mm armature diameter, 28 mm stack, gear ratios 21:1, 24:1, 37.5:1, and 69:1, 150–320 rpm
Integrated optical encoder with 37, 60, or 100 cpr resolution for closed-loop welding wire feed control
Die-cast aluminum gearbox on PM4228 or composite housing on PM42LS, 1.0 kg weight (1.2 kg), IP20 rating
Variants PM4228/101, PM4228/111, PM4228/121, PM4228/141, PM4228/151, PM4228/161, PM4228/171, PM4228/181, PM4228/201, and PM4228/211

Ankarsrum KSV 4030 Compact PMDC Worm Geared Motors (12–42 V DC, 0.9 kg)

Compact permanent magnet DC worm geared motors of the KSV 4030 series with a 40 mm armature diameter and 30 mm stack length are built for portable welding units, laboratory instruments, and packaging machinery.

Operating at 12–42 V DC with gear ratios of 37.5:1, 75:1, and 125:1, no-load speed of 20–255 rpm, insulation class F, IP20 rating, 0.9 kg net weight (1.3 kg packed), and left-hand shaft.

12–42 V DC supply, 40 mm armature, 30 mm stack, gear ratios 37.5:1, 75:1, and 125:1, 20–255 rpm speed
Optional 60 D&S cpr optical encoder or tachometer, internal cooling fan, LC filter, and extended carbon brushes
Connector TE Connectivity 1-106462-1, aluminum or composite gearbox casing, 0.9 kg weight (1.3 kg), IP20 rating
Factory part numbers: KSV 4030/185, KSV 4030/186, KSV 4030/191, KSV 4030/211, KSV 4030/221, KSV 4030/251, KSV 4030/262, KSV 4030/354, KSV 4030/356, and KSV 4030/801

Ankarsrum PM4220 Subcompact Geared Motors (12–42 V DC, 50:1 Ratio, 0.7 kg)

The subcompact PM4220 worm geared motor featuring a 42 mm armature diameter and a shortened 20 mm stack length is specifically engineered for two-roll wire feeders in single-phase welding machines and heavy-vehicle wiper drives.

Rated at 12–42 V DC with a 50:1 gear ratio, 60–280 rpm output speed, insulation class F, IP20 enclosure protection, and an ultra-lightweight 0.7 kg mass.

12–42 V DC input, 42 mm armature diameter, compact 20 mm stack length, 50:1 gear ratio, 60–280 rpm speed
Ultra-lightweight 0.7 kg assembly configurable with either left-hand or right-hand output shaft orientation
Optional 37 or 60 cpr optical encoder for synchronized wire feed regulation in compact welding inverters
High starting torque, class F thermal insulation rating, and IP20 protection for embedded OEM installations

Ankarsrum KS42 Series Universal AC/DC Commutator Motors: KS 4240 & KS 4250 (120/240 V, up to 2200 W)

High-speed universal AC/DC commutator motors of the KS42 series (including models KS 4240 and KS 4250) feature a 42 mm armature diameter, 25–50 mm stack length, and 8–10 mm shaft diameter.

Operating on 120 V and 240 V AC mains, they deliver speeds from 0 to 30000 rpm, output power of 300–2200 W (1.5 kW in KS 4250 mixer drives), and torque up to 5 Nm.

120 V or 240 V AC mains supply, 300–2200 W output power (1.5 kW on KS 4250), rotational speed 0–30000 rpm
42 mm armature diameter, 25–50 mm stack length, 8–10 mm shaft diameter, 0–5 Nm torque range
Ball bearings, diamond-turned commutator, integrated thermal protection, EMC suppression filter, and speed sensor
Proven in TIG tungsten electrode grinders (KS 4240) and commercial mixers with flat or V-belt pulley drives

Ankarsrum BL5440 IR Inner-Rotor Brushless DC Geared Motors (12–42 V DC, 1.0 kg)

Inner-rotor brushless DC (BLDC) worm geared motors of the BL5440 IR series feature a 54 mm stator diameter and 40 mm length.

Operating on 12–42 V DC with worm gear ratios of 21:1, 24:1, 37.5:1, and 69:1, the drive delivers output speeds of 87–285 rpm, wear-free brushless longevity, IP20 protection, class F insulation, and a 1.0 kg mass.

12–42 V DC supply, 54 mm stator diameter, 40 mm length, worm gear ratios of 21:1, 24:1, 37.5:1, and 69:1
Maximum output shaft speed of 87–285 rpm, configurable left-hand or right-hand shaft, 1.0 kg net weight
Equipped with an optical incremental encoder or integrated Hall effect sensors for precision motion control
Engineered for three-phase industrial welding wire feeders, agricultural seeders, and automotive actuators (IP20, class F)

Ankarsrum BL3525 OR & BL 4625 Outer-Rotor Brushless DC Motors (up to 12000 rpm, 3.5 kW)

The outer-rotor brushless DC (BLDC) motor lineup comprises the compact BL3525 OR series (35 mm stator, 25 mm length, 12–42 V DC, 0–6000 rpm, 0.28 Nm continuous torque, 0.8 Nm peak torque, 0.31 kg mass) and the high-power BL 4625 drive engineered for heavy-lift UAVs and mobile machinery reaching

12000 rpm and 3.5 kW peak power.

BL3525 OR specs: 12–42 V DC input, 35 mm stator, 25 mm length, 0–6000 rpm speed, 0.31 kg weight, IP20 rating
BL3525 OR torque: 0.28 Nm continuous duty, 0.8 Nm peak capability, optional planetary gearbox integration
High-output BL 4625 outer-rotor motor: speeds up to 12000 rpm and peak power output up to 3.5 kW
Deployed in servo actuators, industrial UAV drones, e-bikes, power tools, and compact robotic manipulators

Ankarsrum SP 3016 Shaded-Pole Motors, ECE 30 m Encoder Extensions & Drive Spare Parts

For pellet boilers, flue gas exhaust fans, and ventilation units, Ankarsrum manufactures SP 3016 shaded-pole AC motors.

We also supply ECE (Encoder Cable Extension) modules enabling PM4228 wire feeder operation up to 30 m away from the welding power source, electronic motor controllers, camera-inspected cable harnesses, optical encoders, carbon brushes, and worm gear sets.

SP 3016 shaded-pole AC induction motor engineered for high-temperature flue gas exhaust fans in pellet heating systems
ECE encoder cable extension module supporting reliable PM4228 wire feeder telemetry over distances up to 30 m
Custom modular electronic motor controllers regulating speed, torque, and rotation for brushed DC and BLDC drives
Genuine OEM spares: automated camera-inspected encoder cable harnesses, carbon brushes, optical code wheels, and worm gears

Ankarsrum Electric Motors Identification & Selection by Nameplate Code

Swedish drive manufacturer Ankarsrum Electric Motors AB (located at Bruksvägen 1, SE-593 70 Ankarsrum, Sweden) traces its industrial heritage back to Ankarsrum Bruk founded in 1655; electric motor production started at the plant in 1968, and since 2020 the company has operated under the name

Ankarsrum Electric Motors AB. Over 90% of manufactured drives are exported to global OEM machinery builders, while 100% of finished motors undergo individual end-of-line inspection at the factory AEM Test Lab.

For accurate selection of a complete geared motor or replacement parts, provide the full factory nameplate code including the series and variant slash number (such as KSV 5035/376, KSV 5035/603, PM4228/101, PM4228/121, KSV 4030/185, KSV 4030/801, PM4220, KS 4240, KS 4250, BL5440 IR, BL3525 OR, BL

4625, or SP 3016). For legacy welding wire feeders, we perform direct cross-referencing: for instance, discontinued variant KSV 5035/759 is replaced by the modular PM4228/121 drive.

If the nameplate is illegible, send multi-angle photos of the motor assembly along with the nominal supply voltage (12–42 V DC or 120/240 V AC), worm gear ratio, output shaft side (left or right shaft), optical encoder pulse resolution (28 D, 37, 60 D&S, or 100 D&S cpr), and mating terminal

connector type.

KSV 5035 & KSV 4030 PMDC Worm Geared Motors for MIG/MAG Welding Wire Feeders

Permanent magnet DC (PMDC) geared motors of the KSV 5035 and KSV 4030 series serve as the global industry standard for two-roll and four-roll welding wire feed mechanisms in industrial MIG/MAG and TIG welding machines.

The heavy-duty KSV 5035 series (50 mm armature diameter, 35 mm stack length, 1.7 kg net weight, 1.8 kg packed) operates on 12–42 V DC with worm gear ratios of 24:1 and 49:1, no-load speed of 35–250 rpm, insulation class F, and IP20 protection.

The compact KSV 4030 series (40 mm armature, 30 mm stack, 0.9 kg net weight, 1.3 kg packed) offers gear ratios of 37.5:1, 75:1, and 125:1 at 20–255 rpm with either die-cast aluminum or composite gearbox housings.

Both series support integrated LC electromagnetic filters, thermal cutoffs, extended-life carbon brushes, internal cooling fans, and TE/AMP 735075, 5-160465-2, or TE Connectivity 1-106462-1 connectors.

We supply complete KSV 5035 and KSV 4030 geared motors across all factory variants, replacement encoder covers, optical code disks, and brush assemblies.

Modular PM4228 Platform, Lightweight PM42LS & Subcompact PM4220 Drives

Modular PM4228 worm geared motors (42 mm armature, 28 mm stack, 1.0 kg net weight, 1.2 kg packed) are designed for closed-loop welding wire feeders, peristaltic pumps, and industrial door actuators.

Operating at 12–42 V DC across reduction ratios of 21:1, 24:1, 37.5:1, and 69:1, they deliver output speeds of 150–320 rpm and integrate an optical encoder rated at 37, 60, or 100 cpr with left or right shaft orientation.

For single-phase welding inverters and portable wire feeders, Ankarsrum offers the PM42LS variant featuring a reinforced engineering polymer gearbox housing, alongside the subcompact PM4220 geared motor (42 mm armature, 20 mm stack, 50:1 gear ratio, 60–280 rpm speed, 0.7 kg weight) widely deployed

in rail and heavy-duty vehicle wiper drives.

For remote welding booms, we supply OEM ECE (Encoder Cable Extension) modules that transmit PM4228 encoder feedback signals over cable distances up to 30 m without pulse loss.

KS42 Series Universal AC/DC Commutator Motors (KS 4240 & KS 4250 up to 2200 W)

High-speed universal AC/DC commutator motors of the KS42 series (42 mm armature diameter, 25–50 mm stator stack length, 8–10 mm shaft diameter) deliver exceptional power density in a slim frame.

Powered by 120 V and 240 V AC mains, KS42 motors achieve speeds from 0 to 30000 rpm, output power from 300 to 2200 W, and torque up to 5 Nm.

Model KS 4240 is engineered for precision orbital TIG tungsten electrode grinders requiring zero radial shaft runout and stable high-rpm operation.

The high-power KS 4250 variant (up to 1.5 kW) fitted with a flat or poly-V belt pulley serves as the primary drive unit in commercial planetary stand mixers and dough kneaders.

Diamond-turned commutators, precision ball bearings, integrated speed sensors, and EMC suppression filters ensure low acoustic noise and extended maintenance intervals.

Inner-Rotor (BL5440 IR) & Outer-Rotor (BL3525 OR, BL 4625) Brushless DC Drives

Transitioning from brushed commutators to brushless DC (BLDC) technology eliminates brush wear and extends continuous duty service life.

The inner-rotor BL5440 IR worm geared motor (54 mm stator, 40 mm length, 12–42 V DC, ratios 21:1, 24:1, 37.5:1, and 69:1, speed 87–285 rpm, 1.0 kg weight, IP20, class F) incorporates an optical encoder or Hall sensors for three-phase industrial welding machines and precision agricultural seeders.

The outer-rotor BL3525 OR series (35 mm stator, 25 mm length, 12–42 V DC, speed 0–6000 rpm, 0.28 Nm continuous torque, 0.8 Nm peak torque, 0.31 kg mass) provides high rotor inertia suited for servo actuators, medical devices, and e-mobility drives, optionally paired with a planetary gearbox.

The flagship high-output outer-rotor BL 4625 brushless motor reaches speeds up to 12000 rpm and peak power up to 3.5 kW for heavy-lift industrial UAV propulsion and autonomous mobile robotics.

SP 3016 Shaded-Pole AC Motors for Pellet Boilers & Flue Gas Ventilation

Single-phase shaded-pole AC induction motors of the SP 3016 series are specifically developed by Swedish engineers to operate reliably in high-ambient-temperature and dust-laden environments.

The primary application of the SP 3016 is driving flue gas exhaust fans (induced draft blowers) and combustion air blowers in residential and commercial pellet boilers, biomass burners, and heating stoves.

The brushless, capacitor-free shaded-pole design renders the SP 3016 motor immune to voltage spikes and thermal stress near combustion chambers, providing smooth airflow modulation and quiet boiler operation.

We supply SP 3016 motors complete with exhaust impellers, mounting flanges, and heat-resistant silicone wiring leads.

Electronic Motor Controllers, Camera-Inspected Cable Harnesses & OEM Spares

Alongside electric motors, Ankarsrum Electric Motors AB designs and manufactures custom modular electronic motor controllers in Sweden for both brushed PMDC and brushless BLDC drives, providing closed-loop speed regulation, current limiting, and stall protection.

Ankarsrum operates an automated cable harness line producing shielded encoder and power cables where every crimped terminal undergoes automated optical camera inspection prior to inserting TE/AMP connector housings.

SpareX supplies the full range of genuine replacement parts: original carbon brushes, optical encoder covers and code wheels (28 D, 37, 60 D&S, 100 D&S cpr), worm gear sets, bearing end shields, drive pulleys, and 30 m ECE encoder cable extensions.

Swedish ISO 9001:2015 Quality Assurance & International Export Logistics

The Ankarsrum Electric Motors AB manufacturing facility in Sweden is audited by Svensk Certifiering Norden AB (SWEDAC accreditation 2040) under international standards ISO 9001:2015 for quality management (registration number 9001-1097), ISO 14001:2015 for environmental management (number

14001-1097), and ISO 45001:2018 for occupational health and safety (number 45001-1097). The in-house AEM Test Lab performs thermal, acoustic, and endurance verification across production batches.

SpareX coordinates international procurement and export delivery of Ankarsrum electric motors, worm geared drives, and original spare parts for welding equipment manufacturers, industrial service teams, and automation integrators.

We fulfill orders starting from a single replacement motor or spare parts kit up to OEM production batches, providing complete export documentation and door-to-door logistics.

Drive configurations, factory production lead times, and export pricing for Ankarsrum Electric Motors products are calculated individually upon inquiry; public retail price lists are not published by the manufacturer.

We operate as an independent international supplier and are not an exclusive agent of Ankarsrum Electric Motors AB.