Attributes

Brand	-
Category	Industrial Small Parts / Bearings & Bushings
Origin	-
Base Alloy	High Strength Bronze
Solid Lubricant	Graphite Inserts
Product Series	JDB Series
Inner Diameter	30 mm
Outer Diameter	38 mm
Available Lengths	25 mm, 30 mm, 40 mm
Dynamic Load Rating	50 N/mm²
Max Sliding Speed	0.5 m/s
Operating Temp	-40°C to +250°C
Surface Hardness	HB 210

5 reviews

Anonymous

Apr 20, 2026

Rating: 5/5

No more oil leaks

Since installing these self-lubricating bearings, we no longer have oil dripping onto the product below. Clean operation.

Anonymous

Apr 12, 2026

Rating: 5/5

Precise dimensions

Ordered the 303830 model. Measurements were spot on according to our calipers. Fit was snug and professional.

Anonymous

Feb 13, 2026

Rating: 4/5

Good value for money

Solid construction. Took off one star because shipping took a bit longer than expected, but the product quality is top notch.

Anonymous

Feb 05, 2026

Rating: 5/5

Excellent for automated lines

We switched to these JDB bushings for our packaging line. The graphite plugs keep things running smoothly without constant greasing. Very satisfied with the durability.

Anonymous

Feb 04, 2026

Rating: 5/5

Handles heat well

Using these near a heat source in our machinery. They handle the temperature range without seizing up.

5 FAQ

Q: Can these be used in food processing equipment?

A: Yes, but please ensure the specific alloy meets your local food safety regulations.

Q: What is the recommended shaft tolerance?

A: We recommend a shaft tolerance of e8 or f7 for optimal performance.

Q: What is the lead time for the 303840 model?

A: Most standard sizes ship within 2-3 business days from our warehouse.

Q: Do these require any initial lubrication?

A: No, the graphite plugs provide immediate lubrication upon installation.

Q: Are these sold individually or in packs?

A: These are priced per unit, but bulk discounts apply for orders over 50 pieces.

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