Typical waterproof connector motor have different features, including connector shells, pins and sockets, socket retainers, and seals. They also have different features, and they may be used for various applications. First, there are keyed connectors. They are only supposed to connect when they're in the right position. This protects the pins from harm and prevents users from putting them in the wrong sockets. The other type of electrical connector is the locked connector. This one has a locking mechanism that prevents connections from shifting when shocked. The other type of waterproof connector motor is the hermetically sealed connector. This connector is designed to work underwater but up to a specific depth. Water-resistant connectors are also another type. These help in protecting electrical connections against water damage.
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When it comes to buying waterproof connector motor, there are several factors that you need to consider, including performance and physical parameters. When it comes to performance parameters, choose one depending on the conditions in which it will be used. Such conditions include current, voltage, and operating temperature. Physical parameters are also an important consideration since they determine the design of electrical connections and the type of connections the connectors can be used for. Material is one of the important physical considerations. Most waterproof connector motor are covered with plastic. The wire conductors are made from brass, beryllium copper, phosphor bronze, and high copper alloy.
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Attaining maximum usable power requires high peak torque, high continuous torque and high rated speed—the Hudson servomotor has all three.
High performance servo control—dynamic accuracy, velocity regulation and fast settling time—requires a brushless motor that is responsive, both electromagnetically and mechanically.
Many servo motors that have high torque for their size are afflicted with high detent torque (the unenergized servo motor wants to lock onto certain positions more than others). They also often have significant distortion in their back-EMF signature, so even the best AC sinewave servo drives will unavoidably generate torque ripple. These torque defects cause vibration and noise, impair settling time performance, and induce servo hunting. Smooth, quiet motion requires a brushless servo motor with low detent torque, and linear, low-ripple torque output. Rotor balance and bearing quality are also very important, especially at moderate to high speeds.
Magnetic design can also greatly influence brushless motor noise and vibration. Over the last several years, it has been in vogue to use internal permanent magnet (IPM) rotor designs in servo motors in order to cut costs. The IPM design buries permanent magnets within a lamination stack on the rotor shaft so as to focus the permanent magnet flux. Flux focusing allows the use of smaller and/or lower energy magnets, however, it leads to large variations in the motor’s inductance as it spins, resulting in inferior servo performance. It also causes pulsating, non-tangential forces within the motor that cause significant audible noise and vibration.
Specs and Pricing
Not all Neodymium magnets are equal: Sintered NdFeB magnets provide more power in less space than plastic-bonded Neodymium ring magnets
Teknic’s advanced stator winding process packs in maximum copper (left) for more power
Especially in the frequency range most noticeable by humans, 400 Hz to 5 kHz, the Hudson’s EPM rotor design is substantially quieter. The EPM design noticeably improves smoothness and servo performance, as well.
A 20dB difference in sound level is surprisingly noticeable. Press the play button below to listen to the difference between the two motors graphed above.
/audio/audio.mp3The Hudson servomotor’s high power density allows it to fit where other brushless motors can’t, and its open-standard design lets you use Hudson servo motors with practically any servo drive.
Specs and Pricing
Hudson’s integrated, low-profile encoder takes less than half the space of the typical feedback device
Hudson’s unique, tangential-exit pigtail (select models) eliminates the large clearance required for the connectors on most motors
Brushless servo motors are inherently more reliable than brush-type motors because: 1) they don’t have brushes to wear out or burn up at high power output, 2) the location of their windings allows easier heat dissipation, so the windings stay cooler for any given power output, and 3) the only moving parts in contact with each other are within the bearings. Even with these important reliability features, some brushless servo motors are more reliable than others:
Every single Hudson brushless motor receives a full suite of in-line and post-production tests to assure you of the highest incoming quality. Among others, these tests include:
Electromagnetic performance
Magnet field strength
Encoder integrity
Rotor balance
Commutation sensor accuracy
Critical mechanical tolerances
Insulation system (hipot)
Complete functional test
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HASS (Highly Accelerated Stress Screening) to test each industrial servo motor beyond its published specifications.
All Hudson motors carry a three year warranty. Actually, it’s even better than that. Teknic knows that machine components such as motors are sometimes stored in inventory for a while before being used, so we don’t start the warranty clock until you put the motor into service (up to a maximum of six extra months). Nobody else in the industry has a warranty that even comes close.
Specs and Pricing
Hudson’s windings are tightly formed and laced to act as a single thermal mass to reduce hot spots. Tightly packing the windings also reduces wire vibration that causes acoustical noise and insulation failure.
Hudson’s shatter-proof disk is concentrically clamped to the shaft for better accuracy and reliability. Glass encoder disks can easily shatter, and set-screws are prone to failure.
Hudson’s architectural quality, anodized finish won’t chip or peel like paint and epoxy coatings.
Machine designers know that the total cost for any component in their machine is not just the purchase price alone. It includes the cost of any required peripheral components (e.g., cables, sensors, etc.), installation costs, engineering costs (making the component function as desired in the machine), and repair and maintenance costs. Hudson servo motors excel in all these categories.
The purchase price for the Hudson family of servo motors is so low, you’ll wonder what the catch is. Here’s the secret (actually two secrets):
First, our OEM focus has allowed us to eliminate all the middlemen. If you’re an OEM, you can buy directly from Teknic, save all the typical distributor mark-up costs, and get 100-piece annual quantity pricing even when you buy individual servo motors. (You also get factory-direct technical support.)
Second, we’ve intelligently limited the number of industrial servo motor options. Limiting the options allows us to drastically reduce manufacturing expenses and put the savings into brushless motor performance, quality and lower prices. And while we may not offer as many options as some other motor manufacturers, we think the Hudson servo motors offer enough selection to give most of our customers the flexibility they need:
Whether you’re looking for a better, lower cost servo motor, or you’re looking for an economical, but high performance, replacement for a stepper motor, a Hudson servo motor will meet your needs.
A number of thoughtful design features will save you money during installation:
Specs and Pricing
Hudson’s zero-clearance pigtail (select models) can be routed in whatever direction you need to save the most space. Effective motor size is greatly reduced.
Hudson motors can be configured with either a finished pigtail or on-body connectors. No frustration with “flying leads”. (Souriau Trim Trio® connector shown; Molex Mini-fit, Jr. and M12, on-body connectors are also available).
Teknic’s OEM-only focus means you’ll work with factory specialists who will create a solid-body simulation of your application (free of charge) to ensure you get the optimum brushless dc motor (not too big, not too small).
Looking for an all-in-one solution?
ClearPath is Teknic’s line of brushless servo motors with a built-in drive and controller. Simple, compact, and lower cost than the sum of its components.
For OEMs, Teknic will perform a free simulation of your application, and generate a torque/speed curve for the exact motor and drive you plan to use. This will give you complete confidence in the overall, combined performance of your chosen components.
There is often confusion about brushless dc electric motor types because a number of brushless motor technology terms are often used interchangeably. Hudson motors have been called (more or less correctly) all of the following:
Technically speaking, all of Teknic’s servo motors are “3-phase, synchronous, permanent magnet, brushless, servo motors”. The term “servomotor” means that the BLDC motor is used with a feedback device (e.g., an optical encoder) to control torque, velocity, and/or position. The term BLDC or “brushless”, aside from the obvious, means that the motor requires a drive that supports electronic commutation. The term “permanent magnet”, in the context of servomotor types, means that the brushless motor uses permanent magnets on the rotor (or on the stator, in the case of brush-type motors). The term “synchronous” means that the rotational speed of the electromagnetic field is the same as (synchronous with) the speed of the rotor; there is no “slip” between them. And, finally, the term “3-phase” means the servomotor has three separate stator windings (connected together in a delta or wye configuration).
Stepper motors (or, stepping motors) are also brushless, permanent magnet motors. They are generally 2-phase or 5-phase motors. Stepper motors are not typically servo controlled, although their position is sometimes checked with an add-on rotary encoder after the end of each move to correct for lost steps or stalls. Stepper motors are commutated by rotating the electromagnetic field in incremental steps (typically 200 full steps per revolution) and allowing the rotor to “catch up” with it.
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