Wholesale Window Rollers for Sliding Windows: Reliable Supply for USA Wholesalers & Importers

Wholesale Window Rollers | OEM/ODM Cast Iron & Steel | Shijiazhuang TJJ

Why Import Managers & Wholesalers Choose TJJ for Window Roller Supply

Sourcing window rollers from overseas suppliers often comes with three major frustrations: inconsistent dimensions, corrosion or breakage during transit, and long lead times that disrupt your inventory planning. As a US-based import manager or brand owner, you also need clear communication, compliance documentation, and the flexibility to adapt products to local market trends.

Shijiazhuang TJJ addresses these pain points by combining fully integrated manufacturing (casting, stamping, assembly, and packaging under one roof) with a quality-first culture built over two decades. Our wholesale window rollers are produced using precision molds and QC checks at every stage — from raw material inspection to final functional testing. We also offer OEM/ODM design support to create custom profiles, finishes, and packaging for your brand.

Unlike general trading companies, we own the factory. This means you benefit from direct pricing, direct control over production schedules, and direct accountability. Our supply chain in Hebei Province is minutes away from major ports, ensuring cost-effective logistics to the US.

Wholesale Window Rollers: Technical Specifications & Customization

We produce window rollers suitable for vinyl, aluminum, and wood sliding windows — with load capacities ranging from 30 lbs to 120 lbs per roller. The table below shows our standard line and customization options.

Our casting workshop in Shijiazhuang — CNC machining and assembly area for precision window roller components.

* All specifications are indicative. Final dimensions to be confirmed upon order. Please refer to the actual order confirmation.

OEM / ODM Customization: Your Brand, Your Design

Many of our US clients start with a CAD drawing or a sample from another supplier. Our engineering team can reverse-engineer, improve the design, and produce a mold within 10–15 working days. Customizations include:

• Shape, thickness, and slot position adjustments
• Wheel material: nylon, delrin, stainless steel, cast iron
• Corrosion-resistant finishes: zinc plating, powder coating (Ral colors), e-coating, hot-dip galvanizing
• Packaging: polybag, box with your logo, retail-ready clamshell, or bulk carton
• Barcode marking, imprinting brand name, and compliance labels

Compliance & Quality Certifications

All wholesale window rollers from TJJ are manufactured under an ISO 9001:2015 certified quality management system. We test for dimensional accuracy, load capacity, corrosion resistance (salt spray up to 72 hours upon request), and smooth operation. For the US market, we can provide documentation for:

• Material test reports (MTR)
• RoHS compliance (EU and US equivalent)
• REACH declaration (upon request)
• Salt spray test report
• Fumigation certificate for wooden pallets (IPPC)
• Customs-friendly commercial invoices with HTS codes

While we are a metals-focused manufacturer, window roller components can also be supplied with Nylon 66 or POM wheels that are free from phthalates and heavy metals, meeting US CPSC guidelines for children's product safety if applicable.

Commercial Terms for USA Wholesale Orders

We understand that import managers and wholesalers need clear and flexible terms. Below is a summary of our standard commercial conditions for wholesale window roller orders.

* The above terms are guidelines. Exact conditions are confirmed in the sales contract. Please refer to the actual order confirmation.

Factory Strength: Why TJJ Is a Trusted Supplier

Shijiazhuang TJJ TRADE CO., LTD. is an integrated foundry and export company. Our factory has been operating for over 20 years and employs more than 120 skilled workers, engineers, and QC staff. The facility covers 50,000 square feet and houses advanced CNC machining, automatic molding lines, and a full heat-treatment workshop. We are known as one of the earliest casting factories in China, with a reputation for high dimensional accuracy and defect rates below 1.5%.

Our main export products include ornamental iron fencing, window and gate accessories, and cast iron pipes — but our metal-forming expertise translates directly to making robust, durable window rollers. Every batch is traceable from melt to final assembly.

Hear from Our US Clients

Mark R.
Import Manager, Texas

"We had trouble finding a window roller supplier who could match the exact weight and finish of our original part. TJJ replicated it perfectly, and the first batch arrived two weeks ahead of schedule. Already placed a repeat order."

Jennifer L.
Brand Owner, California

"Their OEM support was stellar. From design to packaging with our logo, everything was handled professionally. The quality is consistent — we tested 200 rollers from different cartons and all met spec."

David S.
Sourcing Agent, Florida

"I've visited their factory twice. The QC processes and workers' skill are impressive. Their prices are fair, and they really understand the US market standards. Highly recommended for wholesale window roller sourcing."

Emily T.
Wholesaler, New York

"I needed a vendor that could handle both stock and custom orders mix in one container. TJJ coordinated perfectly, saved me on freight costs, and the documentation was complete for customs clearance."

James Chen
Senior Production Manager, Shijiazhuang TJJ TRADE CO., LTD.

James has 15 years of experience in metal casting and fabrication for architectural hardware. He oversees export quality and technical support for North American clients. He is committed to bridging China's manufacturing capability with international standards.

Our factory gate and warehouse area — ready for container loading to USA.

Frequently Asked Questions by USA Window Roller Buyers

Q: What is the minimum order quantity for wholesale window rollers?
A: Our standard MOQ is 500 pieces per item for stock designs. For custom OEM/ODM window rollers, MOQ starts at 1,000 pieces. We can sometimes accept lower quantities for sample orders.

Q: Can TJJ provide window rollers for heavy commercial sliding doors?
A: Yes, our WR-200 and WR-300 series are designed for higher loads (up to 120 lbs per roller). For loads exceeding 150 lbs, we recommend a consultation with our engineering team to design a reinforced bracket and wheel assembly.

Q: Do you support brand labeling and custom packaging?
A: Absolutely. We can print your logo on the roller bracket, embed it into the wheel, and package in branded boxes or polybags with barcodes — suitable for retail or distribution.

Q: How do you ensure quality consistency for wholesale shipments?
A: We follow an in-process QC system with hourly checks during casting, machining, and assembly. Each batch is sample-tested for load, smoothness, and coating thickness. A pre-shipment inspection report is shared with the buyer before loading.

Q: What is the typical delivery time to the US West Coast?
A: Sea freight from Tianjin to Los Angeles takes approximately 15–18 days. Combined with our 25–35 day production time (OEM), total time from order to arrival is usually 40–55 days for LCL/FCL.