Choosing Servo Motor Housing: Working Requirements and Integration Fit

What the product listing confirms

The published listing gives these details:

That is all the listing confirms for this product. It does not publish dimensions, wall thickness, bore tolerances, mounting interfaces, surface treatment, sealing or pressure-test values, certifications, prices or lead times. The longer description on the same page is about cooling air chamber castings in general, so it should not be read as a performance specification for a servo application. Treat everything outside the table above as something you must confirm with the supplier in writing.

Step 1: Define your working requirements first

Before you compare listings, write down what your motor needs from its enclosure:

• Weight and size envelope. The servo listing is 1-15 kg. If your part is much lighter or heavier, look at another listing (see the comparison below).
• Alloy. The listing names 6061/6063 aluminum alloy. If your drawing calls for a different alloy, such as a die-casting alloy, this listing is not the right match as published.
• Operating conditions. Write down your temperature, sealing, ingress and load requirements. The listing gives no figures for these, so the supplier has to confirm each one for your design.
• Inspection needs. Decide which dimensions, leak tests or material tests you need reported. None are published for this product, so add them to your RFQ.

Step 2: Check integration fit against your drawing

Integration fit means how the enclosure interfaces with the stator, bearings, end caps, encoder and mounting flange. The listing does not publish any of these interface details. To check fit, send:

1. A full drawing or 3D model with critical dimensions and tolerances.
2. The bore, concentricity and flatness values your assembly needs.
3. Any machining, threading or surface finish needs after the extrusion stage.
4. The quantity and the inspection documents you expect.

One related listing shows the kind of figure to ask for. The Motor Fan Housing description mentions 6063 aluminum alloy formed by hot extrusion, with inner-hole concentricity of ≤0.07 mm. That figure belongs to the fan housing listing only. It is not a published value for the servo product, but it is a useful example of a tolerance to specify and get confirmed.

Step 3: Compare with related motor housings

If the servo listing does not fit your requirements, the same catalog includes other motor housings made with different alloys and processes. These are separate products, not variants:

How to use this table:

• For a larger, heavier part beyond 15 kg, the Motor Housing listing (5-25 kg, A356, metal mold casting) is the closer starting point.
• For small die-cast parts under about 2.5 kg, compare the Motor Housing Casting and Motor Fan Housing listings.
• For a complex, gas-tight shell, the Motor shell housing listing describes a case study: a near-cylindrical, multi-hole, ribbed part of about 420 mm x 390 mm x 150 mm, with a gas-tightness requirement of no leakage at 1.6-2.0 MPa for 3 minutes, and alloy targets of tensile strength ≥240 MPa, elongation ≥1.0% and hardness ≥80 HBW. These values describe that listed part only. They do not apply to the servo product unless they are confirmed for your order.

When the servo listing does not apply

The listed product may not be the right choice if:

• your part weighs outside the 1-15 kg range;
• your drawing calls for an alloy other than 6061/6063 aluminum;
• you need a cast shape that extruded sections cannot produce;
• you need guaranteed sealing, pressure, tolerance or certification values before you engage a supplier, because none are published for this product.

In these cases, either choose a related listing or send your drawing and requirements so the supplier can confirm the right material and process.

What to include in your RFQ

No pricing, lead times or certifications are published for this servo motor housing, so your request should ask for them directly. Include the drawing, alloy, annual and batch quantity, critical tolerances, machining and finishing needs, required tests and documents, and the destination market. This gives the supplier what it needs to confirm fit before production, rather than after.