Stepper Motor: Bipolar, 200 Steps/Rev, 57×56mm, 2.5V, 2.8 A/Phase vs Stepper Motor: Unipolar/Bipolar, 200 Steps/Rev, 57×76mm, 4.5V, 2 A/Phase

Stepper Motor: Bipolar, 200 Steps/Rev, 57×56mm, 2.5V, 2.8 A/Phase and Stepper Motor: Unipolar/Bipolar, 200 Steps/Rev, 57×76mm, 4.5V, 2 A/Phase are compared below on the data published by their sellers — price converted to euros, stock, and every specification either seller discloses. On price, Stepper Motor: Bipolar, 200 Steps/Rev, 57×56mm, 2.5V, 2.8 A/Phase is €16.87 cheaper ($76.72).

Feature-by-feature product comparison

Criterion	Stepper Motor: Bipolar, 200 Steps/Rev, 57×56mm, 2.5V, 2.8 A/Phase	Stepper Motor: Unipolar/Bipolar, 200 Steps/Rev, 57×76mm, 4.5V, 2 A/Phase
Price	$76.72↓Best value	$95.92↑Least favorable value
Seller	Pololu	Pololu
Availability	In stock	In stock
Rating	—	—
Current	2.8 A	2 A
Resistance	0.9 Ω	2.25 Ω
Voltage	2.5 V	4.5 V
Dimensions	57×56mm	57×76mm
Weight	700 g↓Best value	1 kg↑Least favorable value
Holding torque	180 oz·in	190 oz·in
Inductance per phase	2.5 mH	3.6 mH
Lead length	30 cm	30 cm
Nema size	23	23
Number of leads	4	6
Shaft diameter	6.35 mm	6.35 mm
Shaft type	1/4 inch "D"	1/4 inch "D"
Size	56.4 mm square × 56 mm	56.4 mm square × 76 mm
Steps per revolution	200	200
	View at seller ↗	View at seller ↗

Specifications are extracted automatically from seller data — an empty cell means the seller does not publish that value, not that the product lacks it.

Robotitem does not test products. This comparison reports seller-published data only, and ranking never takes affiliate commission into account.