Attributes

Brand	-
Category	Hardware & Tools / Other Machinery & Hardware (New)
Origin	-
Material	20Cr / SUJ2 Bearing Steel
Hardness	HRC 58-62
Surface Finish	Ground and Polished
Available Diameters	16mm, 20mm, 25mm, 30mm, 35mm, 40mm, 50mm
Type	Shouldered Guide Bushing
Application	Injection Mold Base & Stamping Dies
Tolerance	ISO h6 / g6
Heat Treatment	Carburizing and Quenching
Origin	Manufactured in China
Customization	Length and Flange Size Customizable

6 reviews

Anonymous

Mar 30, 2026

Rating: 5/5

Great value for money

Compared to local suppliers, the price point here is unbeatable for SUJ2 steel. We will be reordering the 50mm size next month.

Anonymous

Mar 29, 2026

Rating: 4/5

Good quality, fast shipping

The 20cr material seems durable. We haven't run long cycles yet, but initial assembly went smoothly. One bushing had a very minor scratch, but it didn't affect performance.

Anonymous

Mar 17, 2026

Rating: 5/5

Excellent hardness

Tested the hardness upon arrival and it matched the spec sheet perfectly. These are great for high-volume production molds where wear resistance is critical.

Anonymous

Mar 11, 2026

Rating: 5/5

Perfect fit for our mold bases

We ordered the 25mm SUJ2 bushings for a new project. The tolerance was spot on, and they slid onto the guide posts with the perfect amount of resistance. High quality steel.

Anonymous

Mar 04, 2026

Rating: 4/5

Standard industrial grade

Does exactly what it is supposed to do. No complaints about the machining quality. Would prefer if the shouldered dimension was slightly more consistent, but within acceptable limits.

Anonymous

Mar 01, 2026

Rating: 5/5

Reliable supplier

Ordered mixed sizes (16, 30, 40) for maintenance stock. All items were well-packaged to prevent rust. The surface finish is mirror-like.

5 FAQ

Q: Can I get a certificate of material analysis with my order?

A: Absolutely. A Mill Test Certificate (MTC) detailing the chemical composition and hardness test results can be provided upon request at no extra charge. Just note this in your order comments.

Q: What is the difference between the 20cr and SUJ2 options listed?

A: 20Cr is a case-hardening steel often used for the bushing body with a hardened surface, while SUJ2 is a high-carbon chromium bearing steel known for exceptional wear resistance and toughness throughout. SUJ2 is generally preferred for higher precision and heavier loads.

Q: What is the lead time for custom lengths on the 35mm diameter model?

A: For custom lengths on the 35mm SUJ2 bushings, the typical production lead time is 5-7 business days. Please contact us with your specific drawing for an exact quote.

Q: Do these bushings come pre-lubricated or do we need to apply grease during installation?

A: These bushings are shipped with a protective anti-rust oil coating. We recommend cleaning this off and applying your standard mold lubricant or grease suitable for high-speed guiding before installation.

Q: Is the 20Cr material suitable for use with hardened guide pins?

A: Yes, the 20Cr carburized bushings are specifically designed to pair with hardened guide pins. The heat treatment ensures sufficient surface hardness to minimize wear between the two components.

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