3205 vs 3210 Ball Screw: How to Choose?

Quick answer

3205 and 3210 are often used for higher load or longer travel, but they should not be selected by 32 mm diameter alone. 3205 favors thrust and finer feed, while 3210 favors speed; long-travel projects must check support span, critical speed, vibration risk, packing support, and shipping method first.

3205 and 3210 both use 32 mm diameter

3205 usually means 32 mm diameter with 5 mm lead, while 3210 means 32 mm diameter with 10 mm lead. A 32 mm diameter screw is often used for higher load or longer travel, but selection still depends on speed, support span, and mounting method.

For long travel, check support span and critical speed first

A long ball screw should not be judged only by diameter. As support span increases, high-speed use must check critical speed, vibration, alignment, and end support structure. 3210 is faster, but high-speed stability must be confirmed.

Load, packing, and transport risk belong in the RFQ

A 32 mm screw is usually heavier and long-part packing risk is higher. State overall length, quantity, shipping method, and whether wooden case or hard tube support is needed to reduce bending, end damage, or nut stress.

3205/3210 RFQ checklist

Confirm 3205 or 3210, or provide speed and thrust target for supplier recommendation.
Provide overall length, thread length, support span, mounting direction, and working travel.
Describe load, target speed, environment, and whether this is repair replacement.
Confirm end machining, nut style, packing risk, shipping method, and quantity.

FAQ

**Is 3210 always better than 3205 for long travel?**

Not always. 3210 is faster at the same rpm, but long travel also depends on critical speed, support span, load, vibration, and mounting rigidity, so the supplier should recheck the speed and travel requirement when needed.

Next step

Turn this guide into an RFQ

When the specification direction is clear, send the details below together with quantity, lead time, and packing requirements.

Include these details

Model, diameter, lead, accuracy grade, or target application.
Load, speed, travel, mounting method, and matching rail or support-unit needs.
Quantity, lead time, packing, and whether inspection records or shipment photos are needed.

Send 3205/3210 requirements View standard parts and bars