FAQ for Hebei Poray

Q1: What types of products do you offer?

A1: We mainly manufacture ball bearings and plastic rollers. But by development and trust of other customers, now our products cover three series: Series 1-Bearings: Miniature Bearings(Standard & Non-Standard), Ball Bearings, Roller Bearings, Pillow Block Bearings, Auto Bearings, Linear Bearings…; Series 2-Plastic Roller/Pulley/Wheel:Nylon/POM/PU Plastic Sliding Window Roller, Plastic Sliding Door Roller, Conveyor Roller, Steel Housing Roller Set, Zinc/ Aluminium Housing Roller Set, Plastic Housing Roller Set, Furniture Roller, Pulley Wheel, Heavy Duty Roller, Plastic Parts and etc…; Series 3- Screw/Nut Series: Set Screw, Machine Screw, Self Tapping Screw, Hex Cap Screw, Hex Nut, Cap Nut, Square Nut, Flange Nut, Washer and other customized fastener parts that are widely used to assemble bearings and plastic rollers.

Q2: Do you only provide standard product or OEM/ODM could also be realized?

A2: We not only provide standard ball bearing, plastic roller and related asembly screw/blot, but as well as customized bearing, plastic roller and related asembly screw/blot to help all customers realize their specific application. We have been always doing this for all of our customers for years and have got great honor and faith.

Q3: Do you have stocks?

A3: It depends. For the bearings, plastic rollers and assembly screw that we usually produce, there will be stocks. But for most bulk orders, we need to produce. But please feel assured that we will always keep on time for the delivery time.

If you have more questions, please do not hesitate to contact us.

Regards, Hebei Poray Sales Team!

Set Screws for Bearings and Plastic Wheel Assembly

Stainless Steel Set Screw, Carbon Steel Set Screw, Slotted Set Screw, Non-Standard Set Screw:

Quality Standard: GB (National Standard), DIN (German Standard), ANSI (American Standard).

Categories:

DIN913 A2 Flat Point Set Screw, DIN914 A2 Cone Point Set Screw, DIN915 A2 Half Dog Set Screw, DIN916 A2 Cup Point Set Screw, DIN916 with Knurling, Soft Nylon Tip Set Screw, Ball Point Set Screw, Torx Set Screw, Denoise, Carbon Steel Set Screw, Slotted Set Screw, Off-Center Rivet, Non-Standard Set Screw

Material: Set screws are normally stainless steel and brass material, but carbon steel and titanium, aluminum materials are also available for you.

Finish: The finish is very important for screws and bolts. if the material is stainless steel, aluminum, copper, brass, then the finish normally will be natural, but for carbon steel, could be a black oxide, plating, dacromet etc

Material and Applications for Bearings and Rollers

By the rapid development, Hebei Poray is taking the business to new heights that would have made us highly proud of!

The main material of the bearings covers (GCr15) Chrome Steel and (AISI440C, 420, 304, 316) Stainless Steel and Carbon Steel. We sell not only the common quality standard, but most importantly the finest quality bearings of low noise, low vibration, high precision, high sealing performance, high operation performance, long working life etc. The bearings are widely used in the fields of household appliances, micro motor, R/C models, fishing reels, fitness equipment, medical appliance, precision instrument, textile machinery and agricultural machinery…

The main material of the plastic rollers covers the injection part of POM, PP, Poly, PA6, PA66, Nylon, PVC, PU, ABS and etc, beaing part of carbon steel, zinc plated iron, chrome steel, stainless steel and the frame part of plastic, aluminium, zinc plating, stainless steel and etc. There are  not only the common standard types, but also the quite high standard types that can pass the most strict sliding tests. These plastic roller parts are widely used in sliding doors/windows, shower doors/windows, garage doors/windows, caster wheels, door closet wardrobe systems, conveying roller system and etc.

We welcome you to contact us to explore more to discover all the ways that Hebei Poray can assist you for a higher level.

Regards,

Hebei Poray Team

Pastic Roller Set Assembly

As a dedicated supplier, we produce the comprehensive plastic roller products. The plastic roller with us is assembled with high quality ball bearing/ non-standard bearing/ needle bearing and high quality connecting screws/blots or rivets. We can ensure you that the plastic roller will arrive quite astonishingly.

Our plastic roller series cover Nylon/POM/PU Plastic Sliding Window Roller, Plastic Sliding Door Roller, Conveyor Roller, Steel Housing Roller Set, Zinc/ Aluminium Housing Roller Set, Plastic Housing Roller Set, Furniture Roller, Pulley Wheel, Heavy Duty Roller, Plastic Parts and etc…

They are widely used in sliding doors/windows, glass door/windows, shower room door/window, garage door/window and etc.

Looking forward to your inquiry.

Hebei Poray Sales Team

Bearing Tolerance standard

What are the tolerance classes for bearings?

Tolerance classes for ball bearings are defined by a committee within the ABMA known as the “Annular Bearings Engineers Committee” (ABEC). These tolerances are commonly referred to as ABEC rating, or grade. Tolerance classes for roller bearings are covered by the RBEC classifications contained within the same standard. These classes are defined in ABMA standard 20 – Radial Bearings of Ball, Cylindrical Roller, and Spherical Roller Types and ABMA standards 12.1 and 12.2 – Instrument Ball Bearings. The ABEC (and RBEC) tolerance classifications specify both tolerances of size and form for the individual inner and outer rings. The critical features of the rings include the bore (or inner diameter of the inner ring), the outer diameter of the outer ring, the ring widths, and the raceways of each ring. Tolerances of form include roundness, taper, runout, and parallelism.

ANSI Standard 20ISO 492DIN 620
ABEC 1Class NormalP0
ABEC 3Class 6P6
ABEC 5Class 5P5
ABEC 7Class 4P4
ABEC 9Class 2P2

Welcome to Hebei Poray

We have been engaged in bearing and plastic roller production for years.

Our main bearing products are: 

Miniature Bearings(Standard & Non-Standard), Ball Bearings, Roller Bearings, Pillow Block Bearings, Auto Bearings, Linear Bearings…

Our main roller products are:

Nylon/POM/PU Plastic Sliding Window Roller, Plastic Sliding Door Roller, Conveyor Roller, Steel Housing Roller Set, Zinc/ Aluminium Housing Roller Set, Plastic Housing Roller Set, Furniture Roller, Pulley Wheel, Heavy Duty Roller, Plastic Parts and etc…

Our main fastener products are:

Set Screw, Machine Screw, Self Tapping Screw, Hex Cap Screw, Hex Nut, Cap Nut, Square Nut, Flange Nut, Washer and other customized fastener parts that are widely used to assemble bearings and plastic rollers.

Welcome your inquiry and hope to start cooperation.

Sincerely,

Hebei Poray Sales Team

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