MD-2

7.25″ thru hole

Clear
$

General

MD Series Introduction:

The recent development of the MD series index drive confirms Stelron’s commitment to designing and manufacturing quality components  to meet the growing needs of our customers. As industry requirements change, Stelron is dedicated to bringing new technology with the trusted reliability of cam actuated equipment.


Standard Features:

  • Extra large thru hole
  • Integral center post
  • Improved accuracy +/- .0007 @ pitch radius
  • Low-profile
  • Rugged design
  • Servo-ready version
  • High torque capacity
  • Available in (3) sizes
  • Higher number of stations
  • Medical and clean room solutions

General:

The MD indexer design incorporates the highest degree of application versatility available today. The integral center post with stationary dial plate is ideal for centrally mounting robots and other pick-and-place type actuators. The low-profile design of the housing makes it ideal for applications where there is a space constraint, and the machined housing surfaces provide universal mounting on any of the five sides. The large pitch diameter of the cam followers allow for superior accuracy and stability at a greater radius from the from the center of the dial.

Size & Range

The Md series indexer is offered in three sizes, with thru hole dimensions ranging from 5 inches up to 9.25 inches in diameter. The low-profile height of these units ranges from 6.750 inches to 9.375 inches. These indexers are available in up to 24 stations in a type one cam, allowing for even better accuracy. Special indexing motion sequences are available upon request.

Construction:

The heart of the MD series index drive is our large-diameter barrel cam. This cam is machined from the highest quality steel, CNC profile-ground, and hardened for outstanding durability and accuracy. This barrel cam is manufactured with preload to provide a fixed center distance between the input and output.

Technical

SPEED FACTORS
INDEXES PER MIN 25 50 75 100 200 500
FACTOR Cs .8 1.0 1.12 1.25 1.4 2.0
LIFE FACTORS
LIFE(1000-hrs) 4 8 12 16 24 40
FACTOR Cl .8 1.0 1.12 1.25 1.4 1.6
OUTPUT BEARING MOMENT RATING (Inch-lbs)
MODEL MD-1 MD-2 MD-3
STATIC 138,700 237,200 362,000
DYNAMIC 64,900 98,300 136,200
OUTPUT BEARING THRUST RATING (Inch-lbs)
MODEL MD-1 MD-2 MD-3
STATIC 53,350 69,770 86,180
DYNAMIC 23,180 25,510 29,300
SERVO ~ CONSTANT LEAD SERIES
RATIO MOTION MD-1 MD-2 MD-3
6:1 CV 8,360 19,350 52,900
8:1 CV 10,150 23,800 65,100
12:1 CV 10,120 24,100 66,000
16:1 CV 11,580 27,800 76,300
INT. INERTIA lb-in² 1,350 27,800 76,300
PITCH RAD. ROLLERS 5.500 7.500 9.500
STANDARD SEQUENCES AND CAPACITIES
Number of Stops Indexer period “Tr” B10 @ 50 IND/MIN (in-lbs)
MD-1 MD-2 MD-3
4 270° 4,640 8,180 18,160
6 180° 5,310 9,365 20,780
6 270° 8,480 19,490 53,230
8 150° 6,600 7,890 13,590
8 180° 6,840 12,130 25,960
8 270° 10,520 24,450 66,880
12 90° 6,690 11,790 26,180
12 120° 10,490 23,990 65,570
12 150° 10,810 24,950 68,180
12 180° 10,930 25,440 69,570
12 270° 10,750 24,440 69,700
16 90° 8,610 15,280 30,860
16 120° 13,160 30,460 83,280
16 150° 13,270 30,980 84,790
16 180° 13,160 30,980 84,890
16 270° 12,470 29,780 81,700
24 90° 11,760 21,210 47,200
24 120° 11,690 21,340 47,560
24 150° 11,410 21,010 69,850
24 180° 11,070 38,990 68,220
24 270° 14,880 35,890 62,800
ALL OF THE ABOVE SEQUENCES USE MODIFIED SINE MOTION

Catalog/Service Manual

Video

3D Model

MD-2 “Standard” Shaft MD-2 “L” Shaft MD-2 “K” Shaft
Dial indexer MD-1 Dial indexer MD-1 Dial indexer MD-1

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