Nippon Sharyo DH508 Top Roller for Crawler Crane Undercarriage
The Nippon Sharyo DH508 top roller, also called a crane carrier roller or upper roller, is used on the upper side of the crawler frame to support the returning track chain. It helps guide the chain movement and reduces unnecessary vibration during crane travel.
Product Specifications
| Machine Model | Nippon Sharyo DH508 |
|---|---|
| Part Name | Crane Top Roller / Carrier Roller / Upper Roller |
| OEM Reference | Confirm by old part, drawing, sample, or machine serial number |
| Compatible Brand | Nippon Sharyo |
| Supply Brand | SQ / Shunqi |
| Product Group | Crawler Crane Undercarriage Parts |
| Material Options | 42CrMo, 40Mn2, or 50Mn according to drawing and working requirement |
What Is a Nippon Sharyo DH508 Top Roller?
A top roller is installed on the upper section of the crawler crane track frame. Its main function is to support the returning track chain and keep the crawler system running in a stable path. When the carrier roller becomes worn, loose, seized, or incorrectly matched, the upper chain may sag, shake, or rub against nearby frame areas.
For the Nippon Sharyo DH508 crawler crane, the correct upper roller dimensions are important for installation. Rollers with a similar appearance may still differ in shaft size, roller width, mounting structure, or sealing position. For this reason, we recommend checking the part with photos, dimensions, drawings, or a physical sample before shipment.
SQ supplies replacement crane undercarriage components for maintenance companies, crane owners, fleet service teams, and parts distributors. As one of the aftermarket crawler crane parts suppliers, we focus on fitment verification instead of only matching by machine model name.
Key Features
Designed for DH508 crawler crane use: Suitable for Nippon Sharyo DH508 upper track chain support and crawler undercarriage repair.
Multiple material options: 42CrMo, 40Mn2, or 50Mn can be selected according to drawing, sample, and working condition.
Fitment confirmation support: Old roller photos, drawings, samples, and key dimensions can be reviewed before supply.
Suitable for repair and spare parts stock: Available for maintenance workshops, crane rental fleets, equipment owners, and distributors.
Related DH508 undercarriage parts available: Track rollers, idlers, sprockets, track shoes, and other crawler parts can be checked together.
How to Confirm the Correct DH508 Carrier Roller
Before placing an order, please inspect the old top roller and collect useful details. Important measurements usually include roller outside diameter, roller face width, shaft or bore size, mounting bracket style, and the position of sealing or lubrication areas. If the roller is heavily worn, clear photos from several angles can still help with comparison.
Inquiry Tip: To reduce wrong-part risk, please send your machine model, old roller photos, key dimensions, required quantity, and destination country. If you have a drawing or sample, the confirmation process can be faster and more accurate.
Related Nippon Sharyo DH508 Undercarriage Parts
The top roller is one part of the crawler travel system. For a DH508 repair project, customers may also check several related parts at the same time. The table below is for inquiry organization only; final compatibility should be confirmed before order.
| Part Type | Common Name | Checking Method |
|---|---|---|
| Top Roller | Carrier Roller / Upper Roller | Confirm by shaft size, roller width, and mounting style |
| Track Roller | Bottom Roller / Lower Roller | Confirm roller diameter, flange type, and installation dimensions |
| Idler | Front Idler | Confirm outer diameter, shaft area, and adjuster connection |
| Sprocket | Drive Sprocket | Confirm tooth number, pitch, and bolt hole layout |
| Track Shoe | Crawler Shoe / Track Pad | Confirm width, pitch, and bolt hole spacing |
Packing and Shipment
Packing can be arranged according to roller size, order quantity, and transport method. For export orders, protective packing helps reduce surface damage during handling and long-distance shipment. If the order includes several DH508 crawler crane parts, combined packing can be discussed before delivery.
FAQ
Is a top roller the same as a carrier roller?
Yes. In many crawler crane undercarriage inquiries, top roller, carrier roller, and upper roller refer to the roller that supports the upper section of the crawler chain.
Can SQ supply other DH508 undercarriage parts?
Yes. SQ can help check DH508 track rollers, idlers, sprockets, track shoes, and related crawler crane undercarriage components according to your inquiry.
Do you support aftermarket crawler crane parts buyers?
Yes. SQ supports repair workshops, equipment owners, parts distributors, and fleet service teams looking for aftermarket crawler crane parts suppliers.
Need Help Checking a DH508 Top Roller Can Fit Your Machine?
Send us your old roller photos, dimensions, drawing, or sample information. SQ can help review the correct Nippon Sharyo DH508 top roller and related crawler crane undercarriage parts for your repair or stock order.+8618559587739
