Product Description
OEM lock washer RA 772-127 for Raymond electric lift trucks. Spring steel DIN 127 compliant helical split lock washer, single-turn design. No manufacturer cross-references. Prevents loosening of bolted joints under dynamic load. Typical metric range M3–M72. Uncoated or zinc plated.
Specifications
Material
| Material Specification | Spring steel |
Part Numbers
| OEM Part Number | RA 772-127 |
| Manufacturer Part Number | 772-127 |
Frequently Asked Questions
Q: What is the material and design specification of the RA 772-127?
A: The RA 772-127 is a spring steel, DIN 127 compliant helical split lockwasher with a single-turn design. This design provides consistent locking force across metric fastener sizes M3 through M72 for Raymond electric lift trucks.
Q: How does the RA 772-127 prevent bolt loosening?
A: The RA 772-127 uses helical spring tension to maintain constant bearing pressure on the bolt and joint surface. This counteracts vibration and micro-motion that causes traditional bolts to loosen under dynamic loads common in electric lift truck operation.
Q: What coating options are available for the RA 772-127?
A: The RA 772-127 is supplied in uncoated spring steel or zinc-plated finish. Uncoated versions are standard for protected internal assemblies; zinc-plated versions are specified for exposure to moisture, salt, or cold storage conditions.
Q: Does the RA 772-127 have equivalent cross-reference part numbers?
A: The RA 772-127 is an OEM Raymond part with no established manufacturer cross-references. Always order using the exact part number RA 772-127 to ensure correct DIN 127 single-turn helical design and spring rate.
Q: What is the typical lifespan of the RA 772-127 in field service?
A: The RA 772-127 is a permanent fastening component designed for the service life of the lift truck. Replace only if damage is visible, spring tension is lost, or after removal during maintenance to ensure continued vibration resistance.