Overview – BUFFER RING 1112703 Series
The Hitachi BUFFER RING 1112703 is part of a proven family of components used across Hitachi hydraulic cylinder and joint positions as the buffer ring cushioning end-of-stroke travel, and several interchangeable part numbers share the same fitment.
Parts Characteristics
A buffer ring that cushions the end of stroke in a hydraulic cylinder or joint, so the piston decelerates instead of hammering the cap. It carries the cushion that the cylinder life depends on, so a true, correctly sized ring keeps the impact from cracking the end.
Applicable Models & Applications
Used at Hitachi hydraulic positions specifying this buffer ring (series). Match the section, the diameter and the groove against your old ring – buffer rings differ in how they seat and carry.
Maintenance & Replacement
Inspect for a crushed face and a relaxed gap at every cylinder strip. A ring that has begun to flatten cushions nothing, and the nothing is what hammers the cap.
Confirm the ring seats fully in its groove on fit. A ring popped only part way lets the piston bottom, and the bottom is what damages the bore.
Replace rather than reuse a set one. A ring that has taken a compression will not cushion, and the piston is what hits.
Keep common buffer rings for your cylinder on the bench. They cost almost nothing, they save a cylinder, and an actuator open on a ring is a machine waiting on a small part.
Price Reference (USD)
As a reference, the BUFFER RING 1112703 is typically priced between USD 5 and USD 35 depending on configuration, lot size, and current exchange rates.
Value & Service
We supply brand-new Hitachi buffer rings with the size confirmed against your cylinder, so the stroke stays cushioned.
The BUFFER RING family includes XB00004760, XB00015049, YD00001124, YD00001136, YD00001146; we can cross-check which one matches your serial number.
For critical Hitachi Engine Parts such as the BUFFER RING 1112703, Racer Machinery offers both single units and bulk quantities with traceable sourcing.
