SEW EURODRIVE RF40LP90LKS3-DT90L-4 Ac Motor 1.5KW 1704RPM 480V-AC 3PH

( Brand: Sew Eurodrive ), ( Manufacturer Part Number: RF40LP90LKS3-DT90L-4 ), ( Part Type: Ac Motor ), ( Power: 1.5 Kw ), ( Rpm: 1704 Rpm ), ( Voltage: 480 V-ac ), ( Phase: 3ph ), ( Reference Sku: 1759834 ), ( Product Condition: Used Excellent )

Review SEW EURODRIVE Ac Motor 1.5kw 1704rpm 480v-ac 3ph

The **SEW-EURODRIVE RF40LP90LKS3-DT90L-4** is a high-performance, robustly engineered **1.5 kW (2 HP) AC induction motor** designed for demanding industrial applications requiring precision, reliability, and efficiency. Part of SEW-EURODRIVE s renowned **RF40 series**, this motor combines cutting-edge technology with a compact yet durable construction, making it an ideal choice for conveyor systems, material handling, packaging machinery, and other automated processes where consistent performance is critical. With a **rated speed of 1,704 RPM at 480V AC, three-phase operation**, this motor delivers a balanced blend of torque and speed, ensuring smooth operation even under variable loads. Its **IE3 energy efficiency classification** (or IE2 under certain conditions) minimizes power consumption while maximizing output, contributing to both operational cost savings and sustainability efforts.

The **DT90L-4** designation indicates a **direct-on-line (DOL) start configuration**, featuring a **4-pole design** that optimizes torque characteristics for applications requiring moderate to high starting torque without the need for complex soft-start or variable frequency drive (VFD) integration though it remains fully compatible with such systems if required. The motor s **IP55 protection rating** ensures resistance to dust, solid particles, and splashing water, making it suitable for harsh environments such as factories, warehouses, or outdoor installations where protection against contaminants is essential. The **LKS3** variant incorporates a **flange-mounted design with a hollow shaft**, offering flexibility in integration with gearboxes, couplings, or direct shaft connections, while the **LP90** frame size provides a robust, yet space-efficient footprint, reducing installation complexity in tight machinery layouts.

SEW-EURODRIVE s reputation for **long-term reliability** is further reinforced by the motor s **high-quality materials**, including **corrosion-resistant coatings** and **precise internal balancing**, which significantly reduce vibration and noise levels typically below **70 dB(A)** ensuring a quieter, more stable operational environment. The **thermal protection class F (155 C)** and **insulation class H (180 C)** ratings extend the motor s operational lifespan, even under continuous duty cycles, while the **bearing lubrication system** is designed for minimal maintenance, reducing downtime and service costs. Additionally, the motor s **standardized mounting dimensions** and **compatibility with SEW-EURODRIVE s extensive range of drives and controls** (such as the **MOVITRAC** series) allow for seamless integration into automated systems, enabling precise speed and torque control when paired with variable frequency drives.

For applications demanding **high torque at low speeds** or **regenerative braking**, the **DT90L-4** variant can be easily adapted with optional accessories, including **dynamic braking resistors** or **encoder feedback systems**, enhancing its versatility. SEW-EURODRIVE s **global certification compliance** including **CE, UL, and CSA approvals** ensures that this motor meets stringent international safety and performance standards, making it a trusted solution for industries worldwide. Whether deployed in **continuous operation, intermittent duty, or heavy-duty cycles**, the **RF40LP90LKS3-DT90L-4** delivers **uncompromising performance**, **durability**, and **operational efficiency**, embodying the precision engineering that defines SEW-EURODRIVE s legacy in motion control technology.

### **Pros and Cons of buying a SEW Eurodrive RF40LP90LKS3-DT90L-4 AC Motor (1.5 kW, 1704 RPM, 480V, 3-Phase)**

1. **High Efficiency and Reliability** SEW Eurodrive is a well-known brand in industrial automation, offering motors with proven durability, energy efficiency, and low maintenance requirements. This motor is designed for continuous operation, making it suitable for heavy-duty applications.

2. **Precision and Performance** The motor features a **1704 RPM synchronous speed** with a **1.5 kW (2 HP) power rating**, providing consistent torque and speed control. This makes it ideal for applications requiring stable performance, such as conveyors, pumps, or machine tools.

3. **480V, 3-Phase Compatibility** The motor is designed for **industrial-grade power supply (480V, 3-phase)**, which is standard in many manufacturing and industrial settings. This ensures compatibility with most industrial electrical systems without the need for additional voltage conversion.

4. **Compact and Space-Efficient Design** The **RF40 series** is part of SEW s **RF series**, which is known for its compact yet robust construction. This allows for easier installation in tight spaces while maintaining high performance.

5. **Standardized and Easy to Maintain** Being a **standard industrial motor**, it is widely available, and spare parts are easily accessible. SEW Eurodrive provides technical support and documentation, simplifying maintenance and troubleshooting.

6. **Energy Savings Potential** Modern SEW motors often incorporate **high-efficiency designs**, reducing energy consumption compared to older models. This can lead to cost savings in operational expenses over time.

7. **Compatibility with Variable Frequency Drives (VFDs)** The motor is likely designed to work seamlessly with **VFDs**, allowing for speed control and further energy savings in applications where variable speed is required.

8. **Long Lifespan** SEW Eurodrive motors are built for **extended operational life**, reducing downtime and replacement costs in industrial environments.

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1. **Higher Upfront Cost** Compared to generic or lower-end motors, SEW Eurodrive products are **premium-priced**. While this is justified by quality, it may be a significant investment for small businesses or budget-conscious buyers.

2. **Potential Overkill for Light-Duty Applications** If the motor is being used in a **low-torque, intermittent-duty** scenario (e.g., a small workshop machine), a **less expensive standard motor** might suffice without the added cost.

3. **Specialized Installation Requirements** Some SEW motors, depending on the model, may require **precise alignment and mounting** to ensure optimal performance. Improper installation could lead to premature wear or failure.

4. **Limited Availability of Aftermarket Parts** While SEW parts are widely available, **third-party replacements** may not always be as reliable, potentially increasing long-term maintenance costs.

5. **Potential for Overengineering** If the application does not require **high precision or continuous operation**, a **simpler, less expensive motor** (e.g., a basic TEFC or explosion-proof motor) might be sufficient.

6. **Dependence on SEW s Support Network** While SEW has strong global support, some regions may have **limited local service centers**, which could affect response times for repairs or maintenance.

7. **Possible Need for Additional Components** Depending on the application, you may need to purchase **additional accessories** (e.g., couplings, bearings, or control systems) to integrate the motor properly, increasing the total cost.

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The **SEW Eurodrive RF40LP90LKS3-DT90L-4 (1.5 kW, 1704 RPM, 480V, 3-phase)** is a **high-quality, reliable, and efficient motor** well-suited for **industrial, heavy-duty, and precision applications**. Its **compact design, energy efficiency, and compatibility with VFDs** make it a strong choice for businesses requiring **long-term performance and low maintenance**.

However, the **higher cost** may not be justified for **light-duty or low-budget applications**. Buyers should carefully assess whether the **premium features** align with their **specific operational needs** before making a purchase.

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- You require **high reliability, precision, and long-term durability** in an industrial setting.

- Your application demands **consistent speed and torque** (e.g., conveyors, pumps, CNC machines).

- You are working in a **3-phase, 480V environment** and need a **VFD-compatible motor**.

- You can justify the **higher upfront cost** with **reduced maintenance and energy savings**.

- Your application is **low-torque or intermittent**, making a **standard motor** sufficient.

- Budget constraints make the **premium price** prohibitive.

- You need **explosion-proof or specialized certifications** that this model does not provide.

- A **less expensive but equally reliable brand** (e.g., Siemens, ABB, or a reputable generic motor) meets your requirements.

**Final Verdict:** For **industrial applications where performance and longevity are critical**, this SEW Eurodrive motor is an **excellent investment**. For **less demanding applications**, a **more cost-effective alternative** may be preferable. Always **compare specifications, warranty, and total cost of ownership** before finalizing the purchase.

Details:

Motor Drives. Circuit Breakers. Solenoid Coils. Motor Starters.

Safety and Security. Rotary Lobe Blowers. Shock Absorbs.

part #: rf40lp90lks3dt90l4 price

• $284.90

specifications oelemot:

• brand: Sew Eurodrive
• mpn: Rf40lp90lks3-dt90l-4
• part type: Ac Motor
• power: 1.5 Kw
• rpm: 1704 Rpm
• voltage: 480 V-ac
• phase: 3ph
• reference sku: 1759834
• product condition: Used Excellent

seller oelemot:

• city: Delta, Ohio
• # reviews: 126652
• rating: 100.0%

offer oelemot:

• options: Ship-to-home
• quantity: 1
• availability: In Stock
• started: April 7, 2026
• best offers: True
• sold: 0

shipping oelemot:

• transit: 5-5 Days
• cost: $0.00
• service: Standard, Expedited, Overnight
• type: Fixed
• class: Standard, Expedited, One-day

returns oelemot:

• paid by: Seller
• policy: Returns Accepted
• time: 30 Days
• method: Money back

general oelemot:

• Industrial Automation Motion Controls > Electric Motors > General Purpose Motors
• condition: Used

payments oelemot:

• credit card: Mastercard
• other
• wallet: Apple-pay

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