2). Structrue of Inner Bearing:

V Groove Non-Standard Door and Window Roller Bearings with Lots of Moulds

Bearing rings: Dimension tolerance, geometric tolerances, and surface quality of bearing's working surface will influent the operating noise. BY-ROL Bearing adopts precision CNC machining to dimension precision, geometric tolerances, design drawing, mold making, grinding, cleaning,  assembly, testing, every link of strict checks, so as to ensure all our products are tested by our strict criteria.

Balls:  The balls evenly with by the cage, often make rolling movement between 2 rings. The shape, size and number will directly influent bearing's load tolerance and operating capability. We use high precision, small vibration steel ball. It's surface must be strengthened, no bumps scratches, lacerations, pitting and notch.

Cage: Enclose and move with all or part of the balls. It also be used to insulate the balls, guide the balls’ movement and to improve lubrication performance inside the bearing., etc. BY-ROL Bearing’s cage is commonly made of cold rolling carbon steel. But in the corrosiveness environment, nonparallel or high-speed situation, stainless steel, engineering plastics cagecan be decided on request.

Shield: BY-ROL Bearing’s shield, taking the carbon steel material, if necessary,taking stainless steel or other material.

Seal: BY-ROL Bearing adopts different kind of seal material to meet the requirement of their operating in high temperature and being compatible with grease. Acrylonitrile-butadiene rubber is our standard material. but in high temperature environment ,often adopt fluorocarbons, silicone , PTFE shield.

Grease: The shield and seal were filled with standard grease. We can use different grease as request. High Quality Grease is very crucial in plastic injection process. 

3) . Our Advantages:         

V Groove Non-Standard Door and Window Roller Bearings with Lots of Moulds                                                                

OEM Service: We are a company specialzing in producing deep groove ball bearings & miniature bearings & plastic pulleys. We prodcue in accordance with customers' samples or drawings or applicaitons. Customers' brand is avaible on the bearings.

Various existing moulds: We have our own mould factory. Now with years' production, we have lots of existing moulds for customer's choice. If not, new moulds can also be produced out within 15 days.

Authentications: Our products have passed related authentications and have been widely adopted and favored by domestic and overseas customers.

Lead Time: To save lead time, the production, inspection and packaging is doing at the same time.

Machining Workshop: We keep introducting advanced equipments from Germany to meet customers' requirements for precision and production capacity.

Q1：Are you manufacturer?

A2：Yes, we are professional window and door roller manufacturer in China JiangXi. Welcome to visit us.
 

Q2: Can I get a sample before order?

A2：Yes, We could offer the sample and ship the sample by DHL, FedEx, UPS and so on, takes about 7-10 days.but we do not pay for freight.

Q3: What is your delivery time?

A3：Normally, we can finish the order at about 15-30days，depending on your quantity.

Q4:Can you accept small order?

A4:Yes, we accept an trial order for the first time, it is the start of business and our long-term cooperation in the future.

Q5：What advantages we have?

A5:Fristly.strict QC for each order, strict inspection will be carried out by the QC department before shipping. The bad quality will be avoid within door.

Secondly.Shipping: We have shipping department and forwarder, so we can promise faster delivery and make the goods well protected.
Finally.Our factory specializes in the production of door and window roller, sealing strip, corner hinge, lock,door claser，rivet，handle and other door and window accessories.

-- For any detailed inquiry, pls contact us freely. We will make a response within 12 hours.

BY-ROL Bearings will be always here to assit you.

Email: sales@by-rol.com;  by-rol@outlook.com