The Multiquip HS52012018 Crankcase with Bearing Assembly is a genuine OEM component designed for HS81, HS81A, and SHS81A high-speed cut-off saws. As a direct factory replacement, this assembly delivers the precise tolerancing and material integrity required to keep the engine block structurally sound and the crankshaft properly supported. Sourced directly from Multiquip, the part is the correct specification part for Multiquip and STOW Sidewinder series handheld saws.
Key Features
- Precision-Machined Bearing Housing — The integrated bearing seats are machined to OEM specification, ensuring correct crankshaft alignment and minimal rotational play.
- Genuine OEM Construction — Manufactured to the same material and dimensional standards as the original crankcase, maintaining the structural integrity of the engine assembly.
- Direct-Fit Replacement — Engineered to bolt directly into HS81, HS81A, and SHS81A Sidewinder cut-off saws with no modification to mating components.
- Confirmed Fitment for HS81 and SHS81A Series — Covers both the Multiquip and STOW variants of the Sidewinder high-speed cut-off saw lineup.
- Restores Full Engine Function — A cracked, worn, or compromised crankcase leads to oil loss, bearing failure, and engine seizure; replacing with this assembly returns the saw to full operating condition.
The crankcase is the structural core of the engine, housing the crankshaft and its associated bearings while containing the lubrication needed to keep internal components running smoothly. The integrated bearing assembly maintains precise crankshaft positioning, which directly affects blade speed consistency and engine balance during cutting operations. When the crankcase cracks, warps, or the bearing seats wear, vibration increases, oil migrates where it should not, and the engine can seize entirely — making timely replacement critical to keeping the saw in service.
Part Details
| Part Number | HS52012018 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Crankcase with Bearing Assembly |
Compatibility & Fitment
| Name | Model |
|---|---|
| MQ High Speed Cut-Off Saws (Sidewinder) | HS81 |
| MQ High Speed Cut-Off Saws (Sidewinder) | HS81A |
| STOW High Speed Cut-Off Saws (Sidewinder) | SHS81A |
Verify Before You Order
Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.
Why Buy From DHS Equipment
Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.
Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.
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