Why should I purchase your Stepper motors? Other Companys has higher torque motor

We get this question a lot: “Company XXX sells motors with a super high stall torque (oz-in) rating — won’t I get better performance from these higher torque motors”? The answer may surprise you!

Unfortunately, the main statistic advertised on linear step motor or nema 34 closed loop stepper motor is probably the least useful of all — stall (or holding) torque, which is the torque the motor puts out when it is not moving. This isn’t terribly helpful, as your motor isn’t doing any work when it’s standing still! All steppers run at less than their stall torque, so what’s far more important is the usable torque of the motor throughout its RPM range. The “flatter” this torque curve, the more usable force (for accelerating and decelerating) you’ll get out of your drive system.

All stepper motors also put out less torque the faster they rotate. There are two key values that you should be looking for in a motor that influence its performance: current and inductance. First of all, you should look for a motor with a current rating that is less than or equal to the current rating of your motor driver. Motor torque scales linearly with current, so if you are (for example) driving a 5A motor at 3.5A (the maximum the G540 drive can put out), you are only getting 70% of the motor’s rated torque. All other things being equal, a 425 oz-in, 5A motor running at 3.5A will actually achieve less torque than our 420 oz-in motors running at 3.5A.

The other important thing to look for is the motor inductance. The lower the inductance, the slower the motor builds up “back EMF voltage”, which reduces the torque of the motor. While higher inductance can be overcome with higher voltage power supplies, this adds extra heat and expense to a system.

We invite you to look at competitor offerings, and see for yourself why our motors are better. We offer motors that are matched to the current ratings of the drivers we sell. Our motors are also low inductance, 2 mH for our 960 oz-in motors and 3.0 mH for our 420 oz-in motors, both of which work great with commonly available 48V supplies.

So don’t fall for the hype — with our motors, we’ve had customers gain 3x speed increases over motors with higher rated stall torques. We’ve tested our motors and competitor motors with our mechanical systems to find the best value for you. Buy from a name you can trust to get the most out of your machine.



カテゴリー: 未分類 | 投稿者yidiankou32 17:49 | コメントをどうぞ

Two Different ways of Step motor go into linear actuator

Stepper motors closed loop that are traditional rotary motors couple to mechanical rotary-to-linear motion devices (often in the form of a threaded shaft that mates with traversing nut or carriage) to produce linear motion. In this actuator setup, the motor output shaft usually couples to the screw to turn it … and advance the nut (or carriage) and attached load. These are usually small designs that go into consumer products or small-stroke applications in industrial machines.

A large collection of various stepper motors.

Summary of linear stepper motors Online
Engineers most commonly use these linear actuators in larger installations; on axes that move heavier loads; and in high-end medical or material-handling applications such as pick-and-place machinery that require extremely high precision. Like rotary equivalents, linear stepper motors either use a variable reluctance (just described) or a hybrid mode of operation. A hybrid linear-stepper platen is like that of a variable-reluctance linear stepper. In contrast, the forcer has multiple permanent magnets, magnetic U-shaped cores (with coils around them) and a steel yoke.

Summary of rotary-stepper-driven axes
When engineers use rotary-stepper-driven axes instead of linear stepper motors, they face a different set of design considerations. For starters, the engineer must pick the leadscrew’s lead and pitch. Lead defines the distance a screw thread advances in one revolution. Pitch is the distance between adjacent threads. A small lead with more threads per inch outputs higher force and resolution; large leads (or fewer threads) output lower force but higher speed.



カテゴリー: 未分類 | 投稿者yidiankou32 18:10 | コメントをどうぞ

Hello world!

Blog総合管理へようこそ。これは最初の投稿です。編集もしくは削除してブログを始めてください !

カテゴリー: 未分類 | 投稿者yidiankou32 09:02 | 1件のコメント