Wacker Neuson 5100025288 Lock Washer for RD27 Series Tandem Rollers

The Wacker Neuson is a genuine OEM Lock Washer designed for the RD27-100 and RD27-120 series hydrostatic vibratory and ride-on tandem rollers. Sourced directly from Wacker Neuson, this lock washer matches the exact specification of the original part, ensuring a correct, trouble-free installation with no guesswork on fit or function. It is compatible across a wide range of RD27-100 and RD27-120 configurations, including Pro, Basic, and T4F variants. When you need to keep your roller running as intended, the is the right part for the job.

Key Features

• Genuine OEM Specification: — Manufactured to Wacker Neuson's original torque-retention and material hardness requirements, so the washer holds fastener preload exactly as the machine was engineered to deliver.
• Direct Drop-In Replacement: — Matches the original mounting geometry and thread engagement profile, allowing straightforward installation without fitting adjustments.
• Broad RD27 Series Coverage: — Fits RD27-100 and RD27-120 hydrostatic vibratory rollers, ride-on rollers, Pro and Basic tandem rollers, and T4F-compliant variants across multiple serial number ranges.
• Fastener Integrity Under Vibration: — On high-frequency vibratory compaction equipment, loose fasteners are a primary failure point; a correctly seated lock washer prevents fastener back-out and maintains critical joint clamping force through continuous machine operation.
• Verified OEM Part Number: — Part number 5100025288 is the authoritative Wacker Neuson reference for this application, giving you confidence you are ordering the correct component before the part arrives on site.

A lock washer is a small but critical fastening component that sits between a nut or bolt head and the mating surface to prevent the fastener from loosening under vibration, load cycling, or thermal expansion. On vibratory compaction equipment like the RD27 series rollers, the entire machine is subject to continuous high-frequency vibration during operation, which places constant stress on every bolted joint. When a lock washer wears out, deforms, or is omitted, fasteners can gradually back out, leading to loose assemblies, accelerated wear on surrounding components, and potential mechanical failure that takes the machine out of service.

Part Details

Compatibility & Fitment

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.