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Timing Belt Pulleys China Manufacturer & Supplier

What Are Timing Belt Pulleys?

Plastic Timing belt pulleys are a wheel on a shaft or an axle. It is developed in order to support the change of direction and movement of a belt or a cable along the circumference.  Pulley is grooved in between two flanges all over its circumference. Toothed belts and pulleys are of major importance in synchronous drives based on flexible components.Their curvilinear tooth profile was designed with high-speed and provide excellent registration without a loss in torque carrying capability making them ideal for precise registration applications and heavy loads. Timing belt drives are increasingly replacing inefficientroller chain sprockets for the transfer of power from shaft to shaft, torque multiplication, speed reduction, speed increase, and shaft synchronization.

What are the advantages of  timing pulleys?

  1. High Power Transmission Capacity: timing belt pulleys are able to give more power than a friction drive belt because of the Minimum radial load on the shafts and on the bearings. A non-extendable belt that transmits the motion without significant stretching and therefore without lost motion. The transmit capacity has a feature of high torques at low speed. High mechanical efficiency, as much as 98% when properly maintained. By contrast, chain drives are in the 91-98% efficiency range, while V-Belts average in the 93-98% range.
  2. Good performance at high speed: Transmission of absolute asynchronous motion because of absolutely without slipping in motion. Regular and constant motion, since the toothed belt, is free from polygonal winding and the consequent speed variation typical of chain transmissions. Timing belt pulley has Wide speed range, especially important when the entire speed range is developed from a single source
  3. Silent running, good performance, minimum overall dimensions
  4. Clean operation is easy and no need for lubrication and rust-resistant.

Why choose Recca for Timing Belt Pulleys?

Recca Machinery is professional  timing belt pulleys manufacture and supplier in China. We’ve started  timing pulleys production since the year 2006 and always met the rising demand of its customers. The standard sychronous pulleys are supplied with a small prebore so that they can be machined according to customers’ demand. Besides, taper bore is available. All Recca Timing Pulleys can be made of special materials, with heat and surface treatments according to customer specifications. Here following are all the different types of timing belt pulleys can be supplied by us:

What Pitches Can We Supply?

HTD 3M,5M,8M,14M,20M
AT AT5,AT10,AT20
T T2.5,T5,T10
MXL 0.08″(2.032MM)
XL 1/5″(5.08MM)
L 3/8″(9.525MM)
H 1/2″(12.7MM)
XH 7/8″(22.225MM)
XXH 1 1/4″(31.75MM)

Available Material

◆ AlCuMgPb 6061 6082 Aluminum Timing Pulley
◆ C45E 1045 S45C Carbon Steel Timing Pulley
◆ GG25 HT250 Cast Iron Timing Pulley
◆ SUS303 SUS304 AISI431 Stainless Steel Timing Pulley
◆ Other material as per customer demand: cooper, bronze and plastic

Available Surface Treatment

◆ Anodized surface -Aluminum Pulleys
◆ Hard anodized surface — Aluminum Pulleys
◆ Black Oxidized surface — Steel Pulleys
◆ Zinc plated surface — Steel Pulleys
◆ Phosphating surface — Steel Pulleys; Cast Iron Pulleys
◆ Nickel plated surface –Steel Pulleys; Cast Iron Pulleys

High Quality

Machining tolerance can meet H6 precision or customized.
Advantage: OEM/ODM services provide

Package Type

◆ Plastic bags/kraft paper+cartons for light weight; Wooden case for heavy weight
◆ According to the customers ‘ demand

Understanding A Pulley's Part Code and Pulley Drawings

Toothed pulleys are coded on the basis of:
– the number of teeth
– pitch, expressed by one or more letters
– width, expressed in hundredths of an inch
– flange ( if any ) expressed by the letter F.

Pulley 10 XL 037 has:
– 10 teeth
– pitch identified by letters XL
– a belt width of 37 mm

Pulley Drawings Symbols
N = Number of pitch lengths or teeth on a pulley
P = Pitch is the distance between the axes of two adjacent teeth irrespective of whether these teeth are on the pulley or
the belt provided that measurement is taken on the circumferenceor pitch line
t = Belt thickness
Dp = The diameter of the pulley pitch is obtained from formula Dp = (P · N)/P
De = External diameter of pulley De=Dp – NF
Df = Flange diameter
d = Bore diameter
Dm = Hub diameter
F = Tooth width
L = Total length incl. Hub

Black Oxiding Finish for Pulleys

This treatment is carried out on steel pulleys mostly for appearance. The resulting black iron oxide coating will not chip, peel, flake or rub off. A chemical degreasing pretreatment (pickling) is made before black oxiding and causes the deoxidation of the
pulleys. After black finishing, pulleys are oiled in order to protect surface from atmospheric oxidation. This treatment therefore will merely produce a black finish coating but it is not a corrosion-resistant treatment. To achieve a level of corrosion resistance, oil is applied on the pulleys.

Phosphating Finish for Pulleys

This treatment is made on cast iron pulleys in order to obtain a good antioxidizing protection,
without modifying dimensionally the profiles and forms of the treated parts.The phosphating process, that produces on the surfaces of pieces a thin microcrystalline deposit with a basis of manganese and iron phosphates, is completed by an impregnation in protective oils that improves the resistance to the oxidizing agents of the microcrystalline coat itself. In addition to this, the phosphating gives, to the treated parts, a pleasant aeshetic appearance, due to the blackgray colour produced on their surface.