Slotted Roll Pins are hollow, press-fit cylindrical fasteners designed with a full-length slot that compresses upon insertion, exerting continuous outward radial pressure to create a vibration-resistant friction fit. As a specialized Slotted Pins Manufacturer, Anhui Pins Metal produces standard Slotted Spring Pins compliant with ISO 8752 and ISO 13337 alongside custom OEM solutions tailored to your drawings.
| Parameter Item | Specification & Option Details |
| Manufacturing Standards | ISO 8752 (Heavy Duty), ISO 13337 (Light Duty), ASME B18.8.2 |
| Diameter Range (d) | Metric: 1.0 mm – 50.0 mm | Inch: 1/16" – 2" |
| Length Range (L) | 4.0 mm – 200.0 mm |
| Duty Rating | Heavy Duty (ISO 8752) & Light Duty (ISO 13337) |
| Material Options | Spring Steel (65Mn / 60Si2Mn), Stainless Steel (SUS 304, 316, 420) |
| Surface Hardness | HRC 44–51 (Spring Steel) |
| Surface Treatments | Plain Oiled, Black Oxide, Zinc Plated, Phosphated, Passivated |
| Customization Service | We offer custom manufacturing of Slotted Spring Pins according to your specific requirements and drawings. |
- Reliable Retention Force
The slotted design enables the pin to compress during installation and generate continuous radial pressure, creating a secure connection between assembled components.
- Excellent Vibration Resistance
The spring action of the pin helps absorb shock and vibration, reducing the risk of loosening in dynamic operating environments.
- Easy Installation
The compressed design allows for efficient press-fit installation without additional locking components, helping simplify assembly processes.
- Flexible Application Options
Available in various materials, sizes, and finishes, these pins can be used across different industrial applications and assembly requirements.
Installation & Performance
- Compression During Installation
During installation, the slot allows the pin to compress slightly, reducing insertion force while creating a strong interference fit inside the hole.
- Stable Holding Performance
After installation, the pin expands against the hole wall to maintain consistent contact pressure and reliable retention.
- Suitable for Dynamic Applications
The elastic design provides better shock absorption compared with rigid fastening components, making it suitable for assemblies exposed to vibration and repeated loading.
- Reliable Long-Term Use
With proper material selection and surface treatment, Slotted Pins deliver consistent performance and durability in demanding mechanical applications.
FAQ
What is the difference between a slotted roll pin and a solid pin?
A slotted roll pin has a flexible hollow structure with a slot that allows compression during installation, while a solid pin provides a rigid connection mainly for precise positioning. The choice depends on whether the application requires flexibility or fixed alignment.
How does a slotted roll pin stay securely in place?
The pin compresses when inserted into the hole and creates continuous outward pressure against the hole wall. This radial force helps maintain a secure fit during operation.
What hole type is recommended for installation?
A properly sized hole is important to achieve the correct retention force. The recommended hole size depends on the pin diameter, application requirements, and installation conditions.
Can slotted roll pins be used in high-vibration applications?
Yes. Their elastic structure allows them to absorb shock and vibration, making them suitable for mechanical assemblies where movement or repeated loading may occur.
How do I choose the right roll pin for my application?
Selection should consider factors such as load requirements, operating environment, hole condition, material compatibility, and whether the assembly requires frequent maintenance.
Are slotted roll pins suitable for automated assembly?
Yes. Their simple press-fit installation makes them suitable for efficient assembly processes, including automated and high-volume production environments.
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