Linear Actuator Belt, Pulley & Beam Specifications

MACRON Product	PULLEY	BELT	BEAM OPTION	CART WEIGHT/LBS
MACRON PSC-28	28	12H	28x38	.35 (5.6oz)*
MACRON Mini 6-28	28	12S, 12H	28 x n	1.156*
MACRON 6	40	25S	40 x n	3.406*
MACRON 6 Z	40	25S	40 x n	N/A
MACRON 135	40	25S, 25H	40 x 80 Track	1.594*
MACRON 14	40 or 80	25S, 25H, 50S, 50H	40/80 x n	7.811*
MACRON 14 Z	40	25S, 50S	40/80 x n	N/A
MACRON 14 H	40 or 80	25, 50 (S,H)	40/80 x n	12.00*
MACRON Rail	28, 40, 80	12, 25, 50 (S,H)	40/80 x n	Application Specific
MACRON Rail All Stainless	28, 40, 80 28	12, 25, 50 (S,H)	Application Specific	Application Specific
MACRON Single Belt Drive 12	28	12H	28 x n	N/A
MACRON Single Belt Drive 25	40	25S, 25H	40/80 x n	N/A
MACRON Single Belt Drive 50	40	50S, 50H	80 x n	N/A
MACRON Single Belt Drive 50 H	80	50H	80 x n	N/A
MACRON Dual Independent Belt Drive	40	25S, 25H	80 x n	N/A

SHAFTED PULLEY ASSEMBLY Options
A = Single Shafted Pulley
B = Double Shafted Pulley

S = Standard, H = Heavy
n = See MacFRAME Section for Extrusion Options

Note: Cart Type Determines Actuator Style
* Weight shown is for standard cart only.
Contact factory for other cart weights.

EXAMPLE	Product	PULLEY	BELT WIDTH	BEAM OPTION	SHAFT & LOCATIONS
(in bold)	6	40	25S	40x80	A1
	14H	80	50H	80x98	A3

Pulley Specifications
Note: All Shafted Pulleys are Machined as one piece from a solid bar of stress proof steel

	Belt Width						Pulley Weight
'A' Dim	12mm	25mm	50mm	Teeth	Pitch	Travel/Revolution	Shafted	Idler	Double Shafted
28mm	x			21	5mm	105mm (4.134 in)	4.7 oz	4.3 oz	5.4 oz
40mm		x		15	10mm	150mm (5.906 in)	11.3 oz	7.7 oz	17 oz
40mm			x	15	10mm	150mm (5.906 in)	28.4 oz	26.4 oz	31.5 oz
80mm			x	28	10mm	280mm (11.020 in)	105 oz	92.0 oz	119.0 oz

Pulley Diameter = Travel/Revolution divided by 3.1415
All Belts are made of Polyurethane material and steel cords

Belt and Pulley Assembly

BELT TENSIONING TOOL
Belt can be adjusted to a +/- 5 lbs-in range for smooth motion using Macron Belt Tensioning Tool

Belt Tensioning Procedures

A Dim = 28, 40, 80 mm

Belt Tension ‘Recommended Max Preload Range’
Belt can be adjusted to a +/- 5 lbs-in range

		Belt Width
		12mm	25mm	50mm
Belt Type	S	NA	890 N 200 Lbs	1335 N 300 Lbs
Belt Type	H	445 N 100 Lbs	1335 N 300 Lbs	1780 N 400 Lbs

Recommended Running Load
Using Safety Factor of 4

		Belt Width
		12mm	25mm	50mm
Belt Type	S	NA	1945 N 437 Lbs	5118 N 1150 Lbs
Belt Type	H	1282 N 288 Lbs	4570 N 1027 Lbs	12015 N 2700 Lbs

Ultimate Tensile Strength For Belts

		Belt Width
		12mm	25mm	50mm
Belt Type	S	NA	7787 N 1750 Lbs	20470 N 4600 Lbs
Belt Type	H	5117.5 N 1150 Lbs	18280 N 4108 Lbs	48040 N 10800 Lbs

Belt Weight

		Belt Width
		12mm	25mm	50mm
Belt Type	S	NA	.076 Lb/Ft .114 Kg/M	.160 Lb/Ft .235 Kg/M
Belt Type	H	.029 Lb/Ft .043 Kg/M	.121 Lb/Ft .181 Kg/M	.226 Lb/Ft .336 Kg/M

S=Standard, H=Heavy, N=Newtons

Belt And Pulley Assembly Dimensional Drawing

28-12 Pulley Assembly - (Single and Double Shafted)
28-12C Pulley Assembly - (Single and Double Shafted)
28-12H Pulley Assembly - (Single and Double Shafted)
40-25 Pulley Assembly - (Single and Double Shafted)
40-50 Pulley Assembly - (Single and Double Shafted)
80-50 Pulley Assembly - (Single and Double Shafted)
80-50M Pulley Assembly - (Single and Double Shafted)

MACRON DYNAMICS, INC.
460 Caredean Drive
Horsham, PA 19044

1-800-MACRON-1 (1-800-622-7661)

Phone: 215-443-8888
Fax: 215-443-0981
E-mail Macron

Motion Solutions Since 1987