Black Thermoplastic Boat Trailer Roller Bell, 4" Roller, 1/2" Shaft Compatible

• Customization: Available
• After-sales Service: 3 Years
• Warranty: 3 Years
• Model NO.: TBR056
• Loading Weight: 150kg, 15t
• Self-dumping: Self-dumping
• Shape: Bow Roller End Bell
• Usage: Boat Trailer
• Condition: New, New
• ABS: with ABS
• Tent Type: Simple
• Axle Number: 1
• Type: Boat End Bell
• Color: Black
• Diameter(Large End): 4 3/4 Inches
• Diameter(Small End): 3 1/4 Inches
• Bore Size: 1/2 Inch
• Material: PU, PVC, TPR
• Compatibility: Matches 3-Inch Bow Rollers
• Transport Package: Carton Box
• Specification: 4*5′′
• Trademark: HARSCO
• Origin: China
• Production Capacity: 50000PCS/Y

Product Description

TPR Boat Trailer Roller Bell Black 1/2 inch Diameter Bore

 

This black thermoplastic rubber (TPR) bow bell enhances the performance of 4-inch boat trailer rollers by ensuring seamless contact between the roller and boat hull. Designed for superior durability and flexibility, it provides a cushioned, non-marking surface that prevents damage during loading and unloading. This roller bell is compatible with 1/2-inch shafts, making it easy to install on most standard boat trailer setups.

The TPR material is highly resistant to cracking, UV rays, and harsh marine environments, outperforming traditional rubber components. Its 5-1/4-inch diameter maximizes surface area, helping center the boat during transport and minimizing friction against bolts and roller brackets.

 

Features:

• Enhanced Hull Protection: Prevents contact with bolts or brackets to reduce boat damage.
• Thermoplastic Rubber (TPR) Construction: More durable than traditional rubber, resistant to UV rays and weathering.
• Non-Marking Material: Prevents unsightly scratches or marks on boat surfaces.
• Optimal Stability: Increases roller-to-hull contact, centering the boat on the trailer.
• Easy Installation: Fits 4-inch bow rollers with 1/2-inch diameter shafts.

 

Specifications:

• Diameter (Widest Point): 5-1/4 inches
• Attachment Diameter: 3-1/2 inches
• Application: 4-inch wide bow rollers, 1/2-inch shaft compatibility
• Material: Black Thermoplastic Rubber (TPR)
• Color: Black

This premium bow bell ensures smooth boat transport and protects your investment with long-lasting, weatherproof performance. Perfect for trailers navigating rough conditions or frequent loading operations.

 

Get the ultimate reliability and protection with this durable bow roller assembly!

No.	Type	Size A(inch	Size B(inch)	Size C(inch)	Size D(inch)	Material	Color
1	Roller Bell	5.27	3.5	1.7	0.5	PU+UV	Blue
2	Roller Bell	5.27	3.5	1.7	0.5	PU+UV	blue
3	Roller Bell	5.27	3.5	1.7	0.5	PU	Yellow
4	Roller Bell	5.27	3.5	1.7	0.5	PU	Translucen Yellowow
5	Roller Bell	5.27	3.5	1.7	0.5	PP	Orange
6	Roller Bell	4.1	3.1	1.07	0.5	PP+UV	Translucen Yellowow
7	Roller Bell	4.45	3.1	1.2	0.5	PP+UV	Black
8	Roller Bell	5.27	3.5	1.7	0.5	PP	Orange

 

Ningbo Harsco Machinery Co., Ltd is a professional manufacturer of trailer parts in Ningbo, Zhejiang Province, China since 2016.
 

We can produce many trailer parts & accessories as follows: Towbars, axles, brake drums, hubs, brake disc, bearings, springs and springs and suspension kits, couplings, mudguards, U-Bolts, Jockey Wheels, keel rollers and brackets, wobble roller, wheel spacer, equalizers and all accessories related to trailers.

If you can send me the drawings or specifications of the trailer parts, mechanical parts and wheels, we can give you our price.

Q1: Do you have factory?
A: Yes, we have our own factory, own engineers, we can meet custom's unique requirement.

Q2: Can I have a sample order?
A: Yes, welcome sample order to test and check quality. Mixed samples are acceptable.

Q3: It's OK to print my logo on your product?
A: Yes, we can according to your exact requirement.

Q4:How do you ship the goods and how long does it take arrive?
A: We usually shipped by DHL, UPS, FedEx, it usually takes 3-5 days to arrive. Airline and sea shipping also optional.

Q5: What is your advantages?
A: We are professional supplier for more than ten years, we always put the quality and price at the first place. At the same time, our products are exported to various countries, we have full experience to solve thorny problems.

If you want to know about our products and us, welcome to enquiry and email me.thanks
1-Welcome OEM

1. You can use your own brands or ours, if you use our brand, our professional team will help you design the packing.

2-Our service

1. You inquiry related to our products or prices will be replied in 24 hours.
2. Well-trained and experienced staffs to answer all your enquirys in fluent English.
3. Protection of your sales area, ideas of your design and all your private information.
4. We have a QC team, every product will be checked by them before packed.

3-Welcome to visit

1. When you come to our company visit us, we will arrange a car for picking up and help you book hotel. If you want to visit the local scenic spot, our colleague will accompany you.

4-Warranty

1. Customer should be provide the video and the pictures for the problem products.
2. Products returned within the warranty period must bear product number & date code.

5-After service

1. In production and after delivery, we will track on time and tell you goods situation.
2. When the goods arrived, if you find any design and quality questions, or difference from your samples, please feel free to contact us, we will find the question and solve it with you.