Sprockets

The Workhorse: Our Standard Transport Sprocket

Let’s talk about the component itself. We’re looking at a solid, no-nonsense sprocket, typically measuring around 169mm across and 50mm wide. It’s the standard for a reason—it’s built to match up perfectly with the common conveyor chains used on bottle lines everywhere. Its only job is to engage that chain and move it forward, one precise notch at a time, carrying every preform on its journey. It’s a simple job, but if it’s not done perfectly, nothing else works right.

Where It Goes to Work

This isn’t a part for just anywhere. It has one home: the conveyor section of a PET blow molding line. Specifically, the part that shuffles preforms through the heater and into the mold. Its performance is directly tied to your output. A reliable sprocket here means a reliable line. We’ve supplied thousands of these for exactly this job, and they keep coming back for more.

Built Tough for the Long Run

So, what’s the secret? It’s all about fighting wear and tear. These sprockets are in constant, grinding contact with the chain. A cheap one will wear down, its teeth getting thin and hooked. Then the chain starts to slip and jump. 

We stop that from happening. We put extra focus on the teeth—the part that takes all the abuse. We treat them with a special hardening process. This gives the teeth a super-tough skin that resists getting worn down. It means our sprockets last longer, and crucially, they’re easier on your chain too. You save money on parts and downtime in the long run.

The other half of the battle is making it run smooth. A wobbly or off-center sprocket is a nightmare. It shakes the whole mechanism, wears out bearings, and makes a terrible racket. Our machining process is all about getting it right. We make sure every sprocket is balanced and true, with a clean, accurate hole in the middle that fits your shaft nice and tight. No play, no wobble, just smooth, quiet rotation that keeps your preforms moving exactly where they need to be.

Why Buy from Baijinyi?

Here’s the straight talk on why companies choose us:

We Speak Your Language: We’ve been doing this for over ten years. We don’t just sell metal; we understand the machines they go into and the problems you’re trying to avoid.

“Precise” Isn’t Just a Name: It’s what we do. We measure, we check, and we make sure the parts that leave our shop will work the way you expect.

We Can Make It Fit: Got an oddball shaft size or a special request? Send us a drawing. Modifying our standard designs to suit your specific machine is a big part of our business.

A Reliable Source: Based in Foshan, we’re deep in China’s industrial heartland. We’re a stable, known supplier for factories that need to keep their lines running day in and day out.

Got Questions? We’ve Got Answers.

“My machine’s shaft is a weird size. Can you help?”
You bet. We do this all the time. Shoot us a sketch with the dimensions or send us the old part. Making a custom bore or keyway is standard practice for us.

“How fast can you get them to me?”
It depends on what you need. For our standard specs, we can usually turn it around pretty quick. Give us your details, and we’ll get you a firm delivery date by the next day.

“Do you make other parts for blow molders?”
Yes, we do. The best place to see everything we offer is on our website. Head over to www.bjypetmould.com to get the full picture.