RS-75

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General

RS Series Introduction:

The introduction of they RS Series index drive confirms Stelron’s continuing commitment to the design and manufacturing of automation components. These components are integrated into all types of high speed machinery. The new RS indexer has many improvements over older designs.


Standard Features:

  • Large tool steel cam – hardened and CNC ground
  • Compact housing – machined on all six sides
  • Universal mounting on any of the six sides
  • Many standard sequences using MODIFIED SINE
  • One piece crossed-roller bearing for support and resistance to combined thrust, radial and moment loading
  • Standard accuracy of +/- .001 @ 6″ radius
  • Fixed center distance from input to output
  • Lowest profile housings
  • Easy maintenance

General:

Indexers similar to this have been available since the 1950’s. In that time these components have proven to be effective solutions in many applications. Reliable can driven indexers can operate at higher speeds than pneumatic and electronic indexing. These cam operated devices require much less maintenance than pneumatic drives, and they are only a fraction of the cost of electronic.

The Stelron RS indexer uses the same type design and incorporates the recent advancements in roller bearing technology. This new product uses a one piece crossed axis roller bearing. This bearing provides superior support and stability to the output shaft while maintaining the most compact design available today.

Construction:

All four styles are pre-loaded to eliminate backlash. The barrel cam types (RS and conventional) have the preloaded manufactured cam. This provides for a FIXED center distance from input to output. The Globoidal type generates pre-load by moving the input shaft closer to the output shaft. This style must therefore have a variable center distance from input to output. This center distance can vary up to 1/32 of an inch.

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 1.23 1.51 1.86 2.10
OUTPUT ROLLER BEARING CAPACITY (lbs)
MODEL RS-75 RS-1 RS-2 RS-3/350 RS-4/450
STATIC 3,740 7,370 17,400 22,400 25,500
DYNAMIC 3,850 6,840 15,600 17,500 15,900
STANDARD SEQUENCES
SEQ.  CCW Move Dwell  CW Move Dwell
F  60° 0° 60° 240°
G 60° 30° 60° 210°
H 60° 60° 60° 180°
I 60° 90° 60° 150°
J 60° 120° 60° 120°
K 90° 0° 90° 180°
L 90° 30° 90° 150°
M 90° 60° 90° 120°
N 90° 90° 90° 90°
O 120° 0° 120° 120°
P 120° 30° 120° 90°
Q 120° 60° 120° 60°
R 150° 0° 150° 60°
S 150° 30° 150° 30°
T 180° 0° 180° 0°
STANDARD SEQUENCES AND CAPACITIES
Number of Stops Indexer period “Tr” B10 @ 50 IND/MIN (in-lbs)
RS-75 RS-1 RS-2 RS-3/350 RS-4/450
3 180° 300 1,130 1,900 4,540 10,700
3 240° 300 1,165 1,960 4,760 11,270
3 270° 300 1,170 1,970 4,820 11,430
4 90° NA 460 780 1,790 3,380
4 120° 360 735 1,530 2,850 6,940
4 180° 365 1,410 1,610 5,770 13,650
4 270° 350 1,395 2,365 5,880 14,020
6 90° 377 1,420 2,390 5,720 9,710
6 120° 380 1,465 2,470 6,000 14,200
6 180° 365 1,450 2,460 6,120 14,580
6 270° 335 1,365 2,325 5,890 14,130
8 90° 460 1,775 2,990 7,265 12,380
8 120° 450 1,770 3,010 7,410 17,630
8 180° 420 1,690 2,875 7,250 17,360
8 270° 375 1,550 2,640 6,750 16,260
12 90° 460* 1,240 2,610 5,100 23,140
12 120° 430* 1,190 2,540 4,990 22,730
12 180° 390* 1,080 2,330 4,640 21,290
12 270° 345* 970 2,080 4,190 19,270
16-2 120° 490 2,010 3,400 8,700 20,960
16-2 180° 430 1,805 3,050 7,910 19,120
16-2 270° 380 1,595 2,710 7,040 17,060
24-2 120° NA 1,280 2,714 5,450 25,050
24-2 180° NA 1,130 2,400 4,850 22,330
24-2 270° NA 995 2,115 4,270 19,720
INT. INERTIA lb-in² 5 15 100 310 1,830
PITCH RAD. ROLLERS 1.187 1.937 2.375 3.500 5.250

Catalog/Service Manual

Video

3D Model

RS-75 “Standard” Shaft RS-75 “L” Shaft RS-75 “K” Shaft
Dial indexer MD-1 Dial indexer MD-1 Dial indexer MD-1

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