SEW Eurodrive BMG2BMG4 Brake Pads: Comprehensive Guide for Industrial Motor Brakes
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What is the SEW-EURODRIVE BMG2/4 friction disc?
These are SEW-EURODRIVE brake friction discs for the BMG2/BMG4 brake series — the wear parts that sit inside a spring-applied motor brake and are the first thing to replace when a brake starts slipping. The pair photographed here is new original stock, and their castings self-identify: BMG2/4 and BE5A are engraved on the steel hub, meaning they are the discs for a BE5A brake — the 40 Nm SEW brake KOEED also has recorded. Each disc is a black friction-material ring bonded to a steel centre hub with an internal spline (about twenty teeth) that rides the brake's splined hub, retained by a spring circlip, with the friction facing riveted through six rivet points. Two discs per set, about 1 kg together; they passed through the Koeed warehouse on 29 October 2025 as new originals, and the eight photos and video below show them as received.
Part details
| Field | Value |
|---|---|
| Manufacturer | SEW-EURODRIVE (cast mark on the hub) |
| Application | Friction discs for SEW BMG2 / BMG4 brake series — engraved "BMG2/4" and "BE5A" (BE5A brake fitment) |
| Construction | Black friction ring bonded to a steel hub; internal spline (~20 teeth) with spring circlip; six rivet points on the friction facing |
| Quantity | 2 discs |
| Condition | New in original packaging (per intake record) |
| Weight | About 1 kg per record (the pair) |
| Intake recorded | 29 October 2025 |
Replacing a brake disc
When a SEW brake starts slipping or the air gap will not return to spec, the friction disc is the wear part to renew. On a BE5A, the brake is removed from the motor, the circlip and worn disc come off the splined hub, and the new disc drops on spline-first before the brake is reassembled and the air gap reset to the SEW dimension. Match by the full identification: these hubs are engraved BMG2/4 with BE5A — if your brake casting says BE5A, this is the disc set. The photo set shows unworn friction faces with full rivet height and an undamaged spline, so a rebuilt brake using these discs starts from a known-fresh wear surface.
Photos and video
All images below are original warehouse photos of the exact discs covered by this record, taken before dispatch. Click any photo to view it full size.
For the brake these discs renew, see the SEW-EURODRIVE BE5A 40 Nm brake — new in box, documented with the same photo-first method.
Sourcing help
KOEED supplies SEW-EURODRIVE brake parts and gearmotor spares, in active and EOL stock. Send the part number for a quote.
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