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Ball Plunger with Cap
Main bodyM SCM435
Ball: SU2 55HRC~
Spring:SWP-BPossible temperature of use--30Load(N)
There is no relief machining on M4 and M5. Also, there is an incomplete threaded part, so chamfer the tap hole on the mounting side. Load values "min." indicate an initial load. and "max." a load when the ball is fully sunk.Loadfkgf=Load NX0.101972
Ball head plunger, also known as spring plunger, or positioning ball/column, is a spring installed inside the screw teeth to adjust the preload and achieve the positioning function of the slider by controlling the screwing depth. Usually suitable for small molds, fixtures, and automated machinery with small lateral sliding loads.
This product BPCT is a ball head plunger with cover type-
There is a hanging platform structure at the bottom of the product thread, which can be positioned through the depth of the counterbore. During installation, only a hexagonal wrench is needed to tighten without adjustment

standared fabric or export carton

Main categories: Spring Plunger, Indexing Plunger, FA Automation Part



FAQ
Q: What s your main products?
A: Standard and custom hardware, like screws, bolts, nuts and other spare parts.
Q: Could we custom size, packing or others? How about MOQ?
A: Sure, customized service is workable. MOQ depends on the size and goods.
Q: Could you provide samples? How long is the delivery time for samples?
A: Sure, if in stock, we will arrange to deliver it about 3-5 days, if it is non-standard, it takes around15 20days.
Q: Do you accept Paypal?
A: Sure, we have Paypal Account, but there is some problem to withdrawn the money. Can you acceptAlibaba Trade Assurance order?Which is similar to Paypal, you can pay via Credit card and TT,convenient and safe.
Q: Where is your company located? Could we visit it?
A: Sure, welcome to visit our factory, it is located in the hometown of Fasteners. Please contact us inadvance.
Ball Plunger with Cap
Main bodyM SCM435
Ball: SU2 55HRC~
Spring:SWP-BPossible temperature of use--30Load(N)
There is no relief machining on M4 and M5. Also, there is an incomplete threaded part, so chamfer the tap hole on the mounting side. Load values "min." indicate an initial load. and "max." a load when the ball is fully sunk.Loadfkgf=Load NX0.101972
Ball head plunger, also known as spring plunger, or positioning ball/column, is a spring installed inside the screw teeth to adjust the preload and achieve the positioning function of the slider by controlling the screwing depth. Usually suitable for small molds, fixtures, and automated machinery with small lateral sliding loads.
This product BPCT is a ball head plunger with cover type-
There is a hanging platform structure at the bottom of the product thread, which can be positioned through the depth of the counterbore. During installation, only a hexagonal wrench is needed to tighten without adjustment

standared fabric or export carton

Main categories: Spring Plunger, Indexing Plunger, FA Automation Part



FAQ
Q: What s your main products?
A: Standard and custom hardware, like screws, bolts, nuts and other spare parts.
Q: Could we custom size, packing or others? How about MOQ?
A: Sure, customized service is workable. MOQ depends on the size and goods.
Q: Could you provide samples? How long is the delivery time for samples?
A: Sure, if in stock, we will arrange to deliver it about 3-5 days, if it is non-standard, it takes around15 20days.
Q: Do you accept Paypal?
A: Sure, we have Paypal Account, but there is some problem to withdrawn the money. Can you acceptAlibaba Trade Assurance order?Which is similar to Paypal, you can pay via Credit card and TT,convenient and safe.
Q: Where is your company located? Could we visit it?
A: Sure, welcome to visit our factory, it is located in the hometown of Fasteners. Please contact us inadvance.
Frequently asked questions about this product (FAQ)
1. What is the maximum load that a ball plunger with a cover can withstand?
The maximum load that a ball plunger with a cover can withstand varies depending on the size specification. The BPCT8 model has the largest size specification and can withstand a minimum load of 11.6N and a maximum load of 26.2N.
2. What are the characteristics of the ball head plunger with a cover?
1. It can be positioned through the depth of the counterbore, and during installation, it can be tightened in place without further adjustment.
2. The shoulder is equipped with an internal hexagonal hole, which can be installed using an internal hexagonal wrench, making it more convenient.
3. It is recommended to install it on the guide rail and other lateral core pulling devices for use.
Frequently asked questions about this product (FAQ)
1. What is the maximum load that a ball plunger with a cover can withstand?
The maximum load that a ball plunger with a cover can withstand varies depending on the size specification. The BPCT8 model has the largest size specification and can withstand a minimum load of 11.6N and a maximum load of 26.2N.
2. What are the characteristics of the ball head plunger with a cover?
1. It can be positioned through the depth of the counterbore, and during installation, it can be tightened in place without further adjustment.
2. The shoulder is equipped with an internal hexagonal hole, which can be installed using an internal hexagonal wrench, making it more convenient.
3. It is recommended to install it on the guide rail and other lateral core pulling devices for use.
If an indexing plunger starts sticking, failing to seat, or wearing out early, replacing it might "solve" the symptom—but not the cause. Most field issues come from receiving-hole design, alignment stack-up, contamination, or side loading.
In harsh environments, "indexing plunger" is not the full spec. The real spec is: corrosion risk + cleaning method + contamination tolerance + maintenance reality. If you don't design around those, even a premium plunger will feel gritty, stick, or corrode before its expected service life.
"Load rating" sounds simple until a pin bends in the field and everyone asks why. Indexing plunger pins rarely fail from pure axial force. They fail because real assemblies introduce shear, bending, misalignment, and vibration—often all at once.
A standard indexing plunger is designed to re-engage automatically. That's great—until it isn't. In fast changeovers, rotating plates, or safety-critical adjustments, you may need the opposite behavior: the pin must stay retracted until the operator intentionally releases it.
When an indexing plunger "doesn't feel reliable," the issue is often not the plunger. It's the hole. Bore size, chamfer, and engagement depth decide whether the pin finds the target smoothly—or fights burrs, edge damage, and misalignment for the rest of its life.
Did you know that using the wrong set screw can cause permanent damage to delicate components? Whether you're working with polished aluminum, plastic housings, or precision assemblies, a traditional metal set screw might scratch, deform, or even crack your components.
What do medical devices, precision electronics, and high-end furniture have in common? They all require non-marring, precision fastening solutions—and nylon tip set screws are the go-to choice.Standard fasteners often cause more harm than good in delicate assemblies.
Did you know that a single fastener can determine whether your assembly lasts for years or fails within weeks? It's not always about the size or strength of the screw—it's about the application fit. In industries where surface integrity, vibration control, and precision are essential, the nylon tip set screw is often the unsung hero.
"One wrong screw can ruin your entire assembly." That's not an exaggeration—it's a reality many engineers and manufacturers face when choosing between different types of fasteners. Imagine tightening a set screw into a soft aluminum or plastic surface, only to find cracks, scratches, or permanent damage.
In many industries, fastening delicate components without causing surface damage is a constant challenge. That's where nylon tip set screws come in — a smart and reliable solution for non-marring, vibration-resistant fastening.
When you use a sliding door or open a drawer, you can feel the smooth stop and click. This comes from the ball head plunger and spring plunger inside. A high-quality ball head plunger uses strong materials like 304 stainless steel. This gives you better durability and protects against rust.
You use a plastic ball plunger to move parts gently. Material is important. POM and PA work for everyday jobs. PEEK is better for hot or tough places. Ball plungers keep electronics and molds safe. They protect soft surfaces.
Hygiene is very important in food processing. Every part, even a stainless steel ball plunger, must meet hygiene rules. Clean machines help keep food safe for people. Picking parts that resist germs and rust means you can trust your equipment for years.
You use spring ball plunger technology to get steady preload and close tolerances in your automation equipment. Spring-loaded plungers help you get exact positioning. This makes design and performance better.
Ever wondered what makes that satisfying "click" in knobs or fixtures? It’s often a spring plunger—a small part with a big job. From holding sliding doors in place to aligning machine components, spring plungers are everywhere. Choosing the wrong one can lead to loose fits or worn-out parts.
Ever wonder how machines get their parts to line up just right? That perfect fit often depends on small components like spring plungers. These parts help with positioning, clamping, and alignment in mechanical systems. But for even greater control, eccentric bushings come into play.
Ever wonder what gives that satisfying “click” in mechanical devices? It’s often thanks to a small part called a spring ball plunger. These tiny tools are powerful when used right—but easy to misuse.
Ever wondered how machines lock, click, or hold parts in place with precision? It’s often thanks to tiny tools called spring-loaded devices. Among them, spring plungers and ball plungers do the heavy lifting. But what exactly sets them apart—and why does it matter?
Ever wonder how machines lock parts perfectly into place? The secret is often a small but powerful tool called a spring plunger. These clever devices help position, lock, or release components with precision.
Zhengchen Hardware produces premium ball lock pins for industrial, automotive & machinery applications. Custom sizes & bulk pricing available. Request a quote today!Zhengchen Hardware – Your Trusted Ball Lock Pin ManufacturerWhen secure, quick-release fastening is critical, industries worldwide rely