Brook Crompton Premium Electric Motors, Flameproof Drives & Brake Motors

With an engineering legacy dating back to 1878, Brook Crompton (part of Wolong Group) is a premier global manufacturer of high-efficiency electric motors and industrial drive systems. We supply the complete portfolio of genuine Brook Crompton equipment: heavy-duty W Cast Iron and lightweight W Aluminum series (IE2, IE3, IE4), ATEX/IECEx certified explosion-proof drives (Ex d, Ex nA), integral brake motors, close-coupled JM/JP pump motors, and North American NEMA / IEEE 841 Severe-Duty units to engineering contractors and industrial plants worldwide.

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Brook Crompton W Series Premium Cast Iron Three-Phase Electric Motors (IEC 80–355)

The Brook Crompton W Series heavy-duty cast iron three-phase electric motors (IEC frame sizes 80 to 355, power ratings from 0.55 kW up to 355 kW) are engineered for continuous, demanding service across metallurgy, mining, pulp and paper, and chemical processing facilities. The rugged cast iron frame ensures exceptional structural rigidity, suppresses operational mechanical vibrations, and delivers superior thermal dissipation during prolonged peak load operating cycles.

Broad power spectrum: from 0.55 kW to 355 kW across standardized IEC frame sizes 80 to 355
International energy efficiency tiers: IE2 (High), IE3 (Premium), and IE4 (Super Premium)
Environmental ingress protection: standard IP55 rating with optional severe-duty IP66 configuration
Universal mounting configurations: foot-mounted B3, D-flange B5, combination B35, and C-face B14

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Brook Crompton W Series Aluminum Multi-Mount Three-Phase Electric Motors (IEC 63–180)

Brook Crompton W Series corrosion-resistant aluminum frame electric motors (IEC frame sizes 63 to 180, power ratings from 0.07 kW to 22 kW) provide a lightweight, modular driving solution for advanced machine building. The Multi-Mount design featuring detachable bolt-on feet allows on-site repositioning of the terminal box (top, right, or left) without mechanical machining, enabling seamless integration within space-constrained industrial machinery.

Modular Multi-Mount mechanical layout with detachable feet for terminal box repositioning
Rated power capacity from 0.07 kW to 22 kW housed in compact IEC frame sizes 63 through 180
Weight savings of 30% to 40% compared to cast iron units while sustaining identical torque output
Thermal insulation Class F (155°C rated) with Class B (80K max) temperature rise limitation

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Brook Crompton ATEX/IECEx Flameproof Electric Motors EExd & EExde (Zone 1 / 21)

Brook Crompton EExd and EExde flameproof induction motors are fully certified under rigorous ATEX and IECEx international directives for dependable operation in explosive gas and combustible dust atmospheres classified as Zone 1, Zone 2, Zone 21, and Zone 22. The robust explosion-proof cast iron enclosure is designed to withstand internal detonation without transmitting flames or burning gases to the surrounding industrial ambient environment.

Comprehensive ATEX and IECEx compliance for hazardous gas Zone 1/2 and combustible dust Zone 21/22
Gas group compatibility for IIB and IIC atmospheres with T4 and T5 surface temperature ratings
Advanced EExde configuration: flameproof stator body (Ex d) with increased safety terminal box (Ex e)
Integrated embedded PTC thermistors within stator winding overhangs for instant thermal overload detection

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Brook Crompton Non-Sparking & Dust-Protected Electric Motors Ex ec & Ex tc (Zone 2 / 22)

Brook Crompton non-sparking (Ex ec / Ex nA per IEC/EN 60079-7) and dust-ignition-proof (Ex tc per IEC/EN 60079-31) electric motors are engineered for Zone 2 gas and Zone 22 combustible dust zones. High-precision rotor and stator engineering eliminates electrical arcing, mechanical friction sparks, and excessive surface temperatures under regular continuous industrial operating cycles.

Certified ATEX Ex ec (Zone 2) and Ex tc (Zone 22) protection with T3/T4 thermal classifications
Conductive anti-static external cooling fans coupled with heavy-gauge grounded steel fan cowls
Double-lip radial shaft seals and certified cable entry glands delivering IP65/IP66 tightness
Cost-effective safety solution for agricultural grain silos, flour mills, and woodworking extraction

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Brook Crompton Integral Brake Motors & Witton Kramer / Perigrip Industrial Braking Systems

Brook Crompton integral Brake Motors seamlessly combine an energy-efficient three-phase motor with a heavy-duty, spring-applied, fail-safe electromagnetic disc brake inside a unified enclosure. The brake engages automatically upon power interruption, providing instantaneous emergency deceleration and positive holding torque. The lineup is complemented by standalone Witton Kramer electro-hydraulic thruster brakes and Perigrip caliper drum brake systems.

Integrated heavy-duty electromagnetic disc brake powered via AC or fast-response DC rectifiers
Fail-safe spring-applied operation: instantaneous mechanical lock upon total power cut
Optional hand-release lever for manual mechanism alignment and maintenance procedures
Prime selection for overhead gantry cranes, hoists, inclined conveyors, elevators, and indexing tables

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Brook Crompton NEMA Premium Efficiency & IEEE 841 Severe-Duty Electric Motors

The Brook Crompton North American motor portfolio is built in rigorous conformance with NEMA MG-1, UL, and CSA standards. The NEMA Premium Efficiency series spans frame sizes from 56C to 449T at 230/460V and 575V 60Hz. For aggressive petrochemical environments, the dedicated IEEE 841 Severe Duty line incorporates non-contact Inpro/Seal bearing isolators, precision balance standards, and chemical-resistant cast iron coatings.

NEMA frame spectrum: from 56C C-face flanges up to massive 449T cast iron frames (up to 500 HP)
NEMA Premium certification tested and verified according to IEEE 112 Method B protocols
IEEE 841 Severe Duty configuration with dual Inpro/Seal non-contact labyrinth bearing isolators
NEMA Explosion Proof variations certified for Class I Div 1 Groups C&D and Class II Div 1 Groups F&G

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Brook Crompton Close-Coupled Pump Electric Motors (JM & JP Standard Shaft Profiles)

Brook Crompton specialized Close-Coupled Pump electric motors in JM and JP frame configurations are engineered for direct mechanical mounting onto centrifugal, circulation, and booster pumps. The precision-machined extended shaft with threaded ends facilitates direct impeller mounting onto the motor rotor, eliminating external couplings, intermediate pump bearing housings, and oversized baseplates.

Precision-ground extended shafts machined to strict JM (mechanical seal) and JP (packing) standards
Heavy-duty oversized drive-end bearing engineered to sustain high hydraulic axial thrust loads
Standardized C-face mounting flanges for rigid, vibration-free pump casing attachment
Deployed in industrial fire suppression systems, HVAC hydronic loops, and chemical transfer pumps

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Brook Crompton Single-Phase Rolled Steel Electric Motors (General Purpose & Farm Duty)

Brook Crompton single-phase General Purpose and Farm Duty electric motors in heavy-gauge Rolled Steel enclosures are engineered for 115V or 230V single-phase electrical utility grids. Utilizing high-torque Capacitor Start / Capacitor Run circuit topologies, these motors deliver formidable starting torque alongside exceptional running energy efficiency and low harmonic noise.

Capacitor Start / Capacitor Run topology providing high locked-rotor torque and smooth acceleration
Rugged heavy-gauge rolled steel frame featuring robust welded mounting feet for zero flex
Integrated manual or automatic reset thermal overload protector guarding stator windings
Ideal for grain augers, reciprocating air compressors, feed conveyors, and agricultural exhaust fans

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Engineering Selection & Technical Drive Sizing

Our technical engineering team performs detailed motor torque, starting inertia, and thermal calculations tailored to your specific application duty (continuous S1 through cyclic S9), driven load dynamics (centrifugal pumps, fans, compressors, heavy crushers), environmental ambient extremes, and inverter-duty (VFD) speed regulation profiles.

Global Industrial Deployment & Application Experience

Brook Crompton electric motors have demonstrated unmatched energy efficiency, operational longevity, and robust reliability for decades in power generation stations, petrochemical refineries, water utilities, open-pit mining operations, cement kilns, and manufacturing facilities across more than 80 countries worldwide.

Manufacturing Standards, Global Certifications & Efficiency

Brook Crompton manufacturing plants operate under strict ISO 9001 and ISO 14001 certified management systems. Products strictly comply with IEC 60034, NEMA MG-1, ATEX 2014/34/EU, IECEx, UL, and CSA standards, undergoing rigorous 100% electrical and dynamic vibration testing on automated computerized test benches.

Direct Factory Supply & Global Logistics

All genuine Brook Crompton electric motors are dispatched directly from certified production hubs in heavy-duty export crates, accompanied by original factory Routine Test Reports, CE/UL certificates of conformity, and comprehensive operational manuals, supported by secure international freight logistics.