Design Specification

Basic Dimension

The design of the conveyor system are divided into 4 major parts which are belt, drive / Idle part, supporting structure and drive method. The belt structure has been outlined at previous section. The other 3 parts will explain below with details:

D : 1-10mm

The dimension of belt will have a variation because of temperature change. Please refer to the chapter of Thermal Expansion Calculation to confirm the design dimension.

Dimension Table

Unit : mm
Sprocket		A	B(min)	C(max)	T	K	HW	S-HW	PD	RH	SH	Acetal	SUS304
Series 100	8T	57	65	70	16	7X7	38	34	133	45.5	38.5	●	●
	10T	72	82	86					164				●
	12T	88	100	103			38		196			●	●
	16T	121	132	136					260				●
Series 200	8T	27	33	35	10	6X6	22	7.5	64	30.5	- -	●	●
	12T	43	50	52		7X7	38	34	98	45.5	38.5	●	●
	20T	76	83	85					163				●
Series 300	8T	51	62	63	15	7X7	12	- -	120	45.5	38.5	●	●
	12T	80	82	94				- -	185			●	●
Series 400	8T	10	14	16	7	3X3	- -	4	26	12.5	- -		●
	12T	16	21	22		4X4	- -		38.5	25.3	- -		●
	24T	35	38	41		8X8	25.5	12	76.5	45.5	38.5	●	●
Series  500	12T	41	52	53	13	7X7	10.5	5	93	45.5	38.5	●	●
	24T	89	100	102					190			●	●

For calculation of conveyor belt width in highest temperature, please refer to thermal expansion / contraction calculation formula. For supporting method at conveyor driving section, please refer to specification of belt support method in accordance with conveyor design.

Pay for manufacturing particular dimensions of Stainless Steel Sprocket Bore is acceptable.

S-HW is the hub dimension of Stainless Steel Drive Sprocket.

Center Drive

To avoid adopting auxiliary supporting bearings at the idler parts on both sides.

Minimum Diameter of Idler Roller – D ( Return Way )

Unit : mm
Series	100	200	300	400	500
íD (min.)	180	150	180	60	150

Idler Roller

Section X-X’

The dimension of belt will have a variation because of temperature change. Please refer to Expansion Calculation in left menu to confirm the design dimension.

Dimension Table

Unit : mm

Roller Diameter ( min.)		A ( min. )	B ( min. )	C ( max. )	D ( min. )	E ( max. )
Series 100	104	76 [ 1	38 [ 2	57	3	114
Series 200	54	40 [ 1	18 [ 2	27	3	59
Series 300	102	69 [ 1	34 [ 2	51	3	117
Series 400	20	19 [ 1	7   [ 2	10	2	27
Series 500	82	56 [ 1	27 [ 2	41	3	95

Precision

Unit : mm

Conveyor Size( Width )	Length
	≥ 5M	≥ 10M	≥ 15M	≥ 20M	≥ 25M	≥ 30M
≥ 350	± 2.0	± 2.5	± 2.5	± 3.0	± 3.0	± 3.5
≥ 500	± 2.5	± 2.5	± 2.5	± 3.0	± 3.5	± 4.0
≥ 650	± 2.5	± 2.5	± 3.0	± 3.5	± 4.0	± 4.5
≥ 800	± 2.5	± 3.0	± 3.5	± 4.0	± 4.5	± 5.0
≥ 1000	± 3.0	± 3.5	± 4.0	± 4.5	± 5.0	± 5.5

When the conveyor is designed to adopt HONGSBELT modular plastic conveyor belt with steel links, the angle between drive shaft and conveyor structure should be accurate in perpendicular, to prevent the deformation of stainless steel rods that would cause the belt to be damaged because of it does not operate in parallel.

Expansion Calculation

Most of objects have the phenomenon of thermal expansion and contraction. Therefore, the phenomenon of thermal expansion and contraction of material caused by temperature change must be considered while designing the conveyor system.

Temperature Rang of Belt Materials

Belt Materials
Polypropylene	Polyethylene	NYLON	Actel
Temperature Range (°C)
1~100	-60~60	-30~150	-40~60

The table above is the standard temperature range of plastic materials for general application. For the standard temperature range of HONGSBELT belt materials, please refer to Basic Data unit in Products Chapter.

Expansion & Contraction Comparison Table – e

Unit : mm / M / °C

Belt Materials				Material Used for Supporting			Metal
Polyproeylene	Polyethylene	NYLON	Actel	Teflon	HDPE & UHMW		Carbon Steel	Aluminum Alloy	Stainless Steel
					73°C~30°C	30°C~99°C
0.12	0.23	0.07	0.09	0.12	0.14	0.18	0.01	0.02	0.01

Expansion & Contraction Calculation Formula

Both length and width of belt will be affected by the ambient temperature change, such as belt will extend when temperature increases and contract when temperature decreases; this part should be considered with a deliberate calculation while designing the conveyor system. The calculation formula of dimension variation  are as follow.

FORMULA: TC = LI × ( To – TI  )× e

Symbol	Definition	Unit
TC	Dimension change	mm
TCL	Length after temperature change	mm
TCW	Width after  temperature change	mm
LI	Dimension at initial temperature	M
To	Operating temperature	°C
TI	Initial temperature	°C

Example 1: The conveyor belt in P.P. material with the dimension in 18.3m for the length and 3.0m for belt width, start form the operating temperature 21℃. What will be the result of the belt length and width at operating temperature increase up to 45°C ?

TCL = 18.3 × ( 45 – 21 ) × 0.124 = 54.5 ( mm )

TCW = 3 × ( 45 – 21 ) × 0.124 = 8.9 ( mm )

From the calculation result, we know that the length of belt will increase approximately up to 55mm and the width of belt may increase nearly 9 mm under temperature range 21 ~ 45°C.

Example 2: The conveyor belt in P.E. material with the dimension in 18.3m for the length and 0.8m for belt width, start form the operating temperature 10℃. What will be the result of the belt length and width at operating temperature increase down to -40°C ?

TCL = 18.3 × ( – 40 – 10 ) × 0.231 = – 211.36 ( mm )

TCW = 0.8 × ( – 40 – 10 ) × 0.231 = – 9.24 ( mm )

From the calculation result, we know that the length of belt will reduce approximately 211.36 mm and the width of belt may reduce nearly 9.24mm, under temperature range 10 ~ -40°C.

Prefix V

Chemical Name	Temperature Condition	Belt Materials
		ACETAL	NYLON	P . E .	P . P .
Vinegar Still Agitated Aerated	21°C	N		O	O

O = OK, N = NO