DW 7/8 in Outer Bushing for Hex Shaft
The DWSP214 is a 7/8 in outer bushing designed for a hex shaft. Its job is invisible: it guides the shaft in its housing, takes up side-to-side play and keeps metal from rubbing directly against metal.
What sets it apart
- Manufacturer's designation: 7/8 in
- Designed for a hex shaft
- Wear part meant to be replaced
- What a bushing does: guides the shaft, prevents metal-on-metal contact
- Original replacement part
Why a hex shaft, and why it wears its bushing
A round shaft transmits motion through clamping force: it can slip under load. A six-sided shaft drives mechanically; its shape alone keeps it from turning in its housing, and nothing slips.
That advantage comes with a trade-off. The six edges concentrate pressure on narrow lines rather than over a whole surface, and the bushing takes that load. It is there to wear out in place of the shaft.
Signs of a worn bushing
The first sign is slop: the driven part moves slightly before the motion actually starts. Next comes a sharp click at every change of direction, then visible wear on the shaft itself.
Changing the bushing early costs a few dollars; waiting until the shaft is marked turns maintenance into a major repair. It is a part you replace preventively, not as a last resort.
Check before you order
The manufacturer identifies this part by its function and size, without tying it to a single model. The right move is therefore to check the part number against the exploded diagram of your hardware before buying.
The 7/8 in designation and the hex shaft: those are the two conditions to check. If both match on your diagram, it is the right part.
Specifications
| Part | outer bushing |
|---|---|
| Stated size | 7/8 in |
| Intended for | hex shaft |
| Role | guides the shaft and takes up play |
What it is for
- Replacing a worn bushing on DW hardware
- Preventive maintenance on a mechanism that has developed play
- Restoring a second-hand part
- Spare parts stock for a fleet of rental gear
Compare with other manufacturers
Equivalent guide parts from other manufacturers:
| Manufacturer | Comparable model | What differs |
|---|---|---|
| Tama | Hardware guide bushing | Sizes specific to the brand's mechanisms |
| Pearl | Replacement guide bushing | Sold with neighbouring parts rather than individually |
| Gibraltar | Assorted replacement bushings | Several diameters in one pack |
| Yamaha | Original guide part | Listed by model diagram, not by size |
Frequently asked questions
- What is the difference between a hex shaft and a round shaft?
- A six-sided shaft drives through its shape and cannot slip in its housing; a round shaft depends on clamping force. The trade-off is that the hexagon concentrates the load on its edges.
- How do I know if this part fits my hardware?
- From the exploded diagram of your model. Check that the part number appears on it, and that the description (outer bushing, 7/8 in, for a hex shaft) matches what the diagram shows.
- Does it need grease?
- A trace of grease at installation is enough. Too much attracts dust, which forms an abrasive paste and speeds up wear instead of slowing it.
- Can I keep playing with a worn bushing?
- For a while, yes, but the play gets worse and the shaft eventually gets marked. Replacing the bushing costs far less than replacing what it protects.
Avis clients
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