Stroke Adjustment Collars
Threaded collar mechanisms that allow ±2 mm fine-tuning of ejector plate travel distance without disassembling the mold.
Stroke Adjustment Collars Products
Stroke Adjustment Collars — Type A
S45C Steel | Threaded mechanism | ±2 mm range
Stroke Adjustment Collars — Type B
S45C Steel | Threaded mechanism | ±2 mm range
Stroke Adjustment Collars — Type C
S45C Steel | Threaded mechanism | ±2 mm range
Stroke Adjustment Collars — Type D
S45C Steel | Threaded mechanism | ±2 mm range
Stroke Adjustment Collars — Type E
S45C Steel | Threaded mechanism | ±2 mm range
Stroke Adjustment Collars — Type F
S45C Steel | Threaded mechanism | ±2 mm range
How Stroke Adjustment Collars Work
Stroke adjustment collars are threaded sleeves that screw onto the ejector rod or a dedicated adjustment post. By rotating the collar, the effective rod length increases or decreases, changing the ejector plate stroke distance by the thread pitch increment. A lock nut secures the setting.
Typical adjustment range is ±2 mm with 0.5 mm pitch threads (4 full turns = full range). This eliminates the need to disassemble the mold and grind/replace ejector rods when stroke fine-tuning is needed during mold trials.
Learn more: For detailed technical guidance, see How Stroke Adjustment Collars Fine-Tune Ejector Travel Distance.
About Stroke Adjustment Collars
Stroke adjustment collars provide on-mold fine-tuning of ejector plate travel distance. The threaded mechanism allows ±2 mm adjustment without mold disassembly — essential during mold trials when ejection stroke optimization is needed between shots.
Application Scenarios
Mold Trial Optimization
During mold trials, ejection stroke often needs 0.5-2 mm adjustment to achieve clean part release without over-ejection.
Why it fits: Stroke collars enable adjustment between shots — no mold opening, no rod replacement, no downtime.
Frequently Asked Questions
How does a stroke adjustment collar work?+
What adjustment range do stroke collars provide?+
When should I use a stroke collar vs a stopper ring?+
Engineering Resources
Need Custom Stroke Adjustment Collars?
Precision stroke adjustment collars manufactured to JIS and DIN standards. Custom dimensions available. MOQ 1 piece.