## How do you calculate torque from horsepower?

When you choose torque, this calculator will measure the approximate torque of an engine based on the horsepower, multiplied by 5,252 (conversion between foot-pounds and horsepower), divided by the RPM of the engine. For example, if your engine has 350 horsepower then the torque would be 367 foot-pounds, at 5,000 RPM.

### How do you calculate engine torque?

The formula for figuring out torque is torque = horsepower of the engine x 5252, which is then divided by the RPMs. The problem with torque, however, is that it is measured in two different places: directly from the engine and to the drive wheels.

#### Why does horsepower and torque Cross at 5252?

It all boils down to the math behind both horsepower and torque. One horsepower is equal to 33,000 foot-pounds of work per minute. Add in the equations relating to torque and velocity, and you’ll find that horsepower always equals torque multiplied by rpm, divided by 5,252.

**What is the formula of IHP?**

For an internal-combustion engine, the mechanical efficiency e = bhp/ihp, where ihp = indicated horsepower. Thus, ihp = bhp/em, or ihp = 500/0.85 = 588 ihp (438.6 kW).

**How do you calculate power from torque and rpm?**

The equation to calculate horsepower is simple: Horsepower = Torque x RPM / 5,252.

## How do you calculate motor torque from current?

How to calculate torque of motor:

- Torque is nothing but a momentary force developed at the time of force is applied to the motor. The unit of torque is N.m (Newton-meter).
- T = V x I x pf / (2 x pi x N(rpm) / 60)
- I => Input AC Current in amps.

### What is the torque equation of DC motor?

Torque or moment or moment of force is the tendency of a force to rotate or move an object about an axis. A force is a push or pull, likewise, torque is a twist to an object. Mathematically, torque, T = F × r.

#### What is 5252 torque calculation?

The number 5,252 is the result of lumping several different conversion factors together into one number. First, 1 horsepower is defined as 550 foot-pounds per second (read How Horsepower Works to find out how they got that number). The units of torque are pound-feet.

**What is friction horsepower?**

: power lost especially in an internal-combustion engine through friction between parts of the machine itself.

**How do you calculate the torque from horsepower?**

The following formula is used to calculate the torque from horsepower. T = HP / (RPM / 5252) Where T is the torque (pound-feet) HP is the horsepower. RPM is the rotations per minute.

## How to calculate the torque of a metric bolt?

Example – Required torque for tightening a Metric bolt to proof load. The proof load for a M30 metric bolt grad 8.8 is 373000 N. The torque required to achieve this tension with a dry bolt can be calculated as. T dry = (0.2) (373000 N) (30 mm) (10 -3 m/mm) = 2238 (Nm)

### How is torque calculated with 0% lubrication?

The torque required to achieve this tension with a dry bolt with 0% lubrication can be calculated as Lubricating the bolt with SAE 30 oil reduces the torque required to achieve the same tension with approximately 40%. The reduced torque can be calculated

#### What kind of torque do you need to tighten an imperial bolt?

Example – Required torque for tightening a Imperial bolt. The required bolt clamping force for a joint is 20000 lbs. Example – Required torque for tightening a Metric bolt to proof load. Lubricating the bolt with SAE 30 oil reduces the torque required to achieve the same tension with approximately 40%.