STF3640-4977-61-56BC Pacific Scientific
Wake Industrial LLC is not an authorized distributor of this product.
- Straightforward Pricing: No Rush Fees, No Credit Card Fees
Current response time:
6 Minutes
45 Seconds
The Pacific Scientific STF3640-4977-61-56BC is part of the Permanent Magnet DC Motors series and provides a continuous current of 5.1 Amps with a continuous torque of 18 pound-inches. The motor operates at 1/2 horsepower with a voltage rating of 90 VDC and runs at a speed of 1750 RPM. It features an IP65 rated TENV enclosure and uses a NEMA 56C frame.
To contact sales for pricing and lead time:
Payment Methods
Shipping Methods
Our Credentials
Product Description:
The STF3640-4977-61-56BC is a permanent-magnet DC motor manufactured by Pacific Scientific within the Permanent Magnet DC Motors series. It is built for fixed-speed or adjustable-speed drives that use DC power supplies, where the machine converts electrical energy into controlled rotary motion for conveyors, indexing tables, and similar industrial automation axes. By combining a standard NEMA frame with sealed construction and rare-earth magnet technology, the motor offers a balance between compact size and repeatable torque output across continuous duty cycles in industrial service.
Rated for a continuous armature current of 5.1 A, the unit can deliver a steady shaft torque of 18 lb-in while operating from a 90 VDC supply. The base speed of 1750 RPM aligns with common gearbox ratios and supports target linear velocities without excessive reduction stages. For rapid accelerations or load surges, the drive can momentarily command up to 67 A, giving additional margin for transient torque before thermal limits intervene. Internally, a 0.95 Ω armature resistance and 4.38 mH inductance govern current rise time, while the 4.05 lb-in/A torque constant indicates the mechanical output available per ampere of armature current. These values shape the motor's dynamic response and help match it with a suitable solid-state DC drive.
The housing is identified as TENV, and its sealing meets IP65 ingress protection for washdown or splash zones. The mounting face follows the 56C NEMA flange pattern, simplifying alignment with standard pump heads, gear reducers, or C-face adapters. Rotor inertia of 6.3 lb-in² moderates speed changes and helps limit overshoot when the motor is used on high-throughput cycles. The sealed enclosure relies on conduction through the frame for heat removal, so a solid metal mounting surface helps support continuous operation.
Frequently Asked Questions about STF3640-4977-61-56BC:
Q: What is the continuous current rating of the STF3640-4977-61-56BC motor?
A: The STF3640-4977-61-56BC operates with a continuous current rating of 5.1 A.
Q: How much continuous torque does the STF3640-4977-61-56BC motor deliver?
A: This motor provides a continuous torque output of 18 lb-in for consistent load performance.
Q: What type of enclosure is used in the STF3640-4977-61-56BC?
A: The STF3640-4977-61-56BC features a Totally Enclosed Non-Ventilated (TENV) enclosure.
Q: What is the ingress protection rating of the STF3640-4977-61-56BC motor?
A: This model is designed with an ingress protection rating of IP65, offering dust tightness and protection from water jets.
Q: What NEMA frame size does the STF3640-4977-61-56BC use?
A: The STF3640-4977-61-56BC is built with a 56C NEMA frame size for mounting compatibility.
