Idler Catalogue |
Idlers can be recognised by its shape. An idlers set in terms of shape is designated as M, N
and P as given in Below Table. |
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Some Standard Dimension Details of roller and its Frame as per IS standard and Shape of Idlers. |
| Roller For Shape N & P |
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| Roller Foe Shape M |
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Other than these different end of spindle (like, link suspended type, External threaded Type, internal Threaded type) can also be manufacture on demand.
Rollers Common Dimension Detail is: |
| Roller Diameter (D) |
D |
| Face Length Of Roller (L) |
L (For L See Table Below) |
| Gauge Length (GL) |
L+8 |
| Over All Shaft Length (OL) |
L+26 For Shape N & P limited up to Shaft Ø 20 mm
L+32 For Shape N & P For Shaft Ø25mm /Ø30mm /Ø35mm /Ø40mm
L+36 For Shape M for Shaft Ø20mm to Ø40 mm |
| Across Flats (AF) |
14 mm For Shaft Ø20 mm
18 mm For Shaft Ø25 mm
22 mm For Shaft Ø30 mm
28 mm For Shaft Ø35 mm
32 mm For Shaft Ø40 mm |
| Collar (c) |
5 mm For Any Shaft |
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Standard Face Length of Roller (L) as requires according to Its Shape and Belt Width: |
| Belt Width in MM |
Face Length of Roller (L) in mm For Shape M |
Face Length of Roller (L) in mm For Shape N |
Face Length of Roller (L) in mm For Shape P |
| 400 |
500 |
250 |
160 |
| 450* |
550 |
290 |
190 |
| 500 |
600 |
315 |
200 |
| 600* |
700 |
350 |
235 |
| 650 |
750 |
380 |
250 |
| 750* |
850 |
415 |
290 |
| 800 |
950 |
465 |
315 |
| 900* |
1050 |
530 |
350 |
| 1000 |
1150 |
600 |
380 |
| 1050* |
1200 |
625 |
400 |
| 1200 |
1400 |
1700 |
465 |
| 1400 |
1600 |
800 |
530 |
| 1500* |
1700 |
850 |
565 |
| 1600 |
1800 |
900 |
600 |
| 1800 |
2000 |
1000 |
670 |
| 2000 |
2200 |
1100 |
750 |
| 2200* |
2500 |
1250 |
800 |
| 2400* |
2800 |
1400 |
900 |
| 2600* |
3000 |
1500 |
950 |
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*Belt width not covered in IS 8598
Different Dimension requirement can also be manufactured on request. |
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| Standard Frame and Bracket Dimension details as per Indian Standard: |
| Mounting Centres (A) |
Belt width + 290mm for belts widths up to 1400 mm
Belt widths + 300 for belts over 1400mm |
| Centre Roller Top Height (B) for Shape P from Stringer Top side |
| Height (B) inmm |
Roller Dia (D) in mm |
Belt Width Range in mm |
| 200 |
Up to 101.6 |
Up to 1000 |
| 215 |
Up to 101.6 |
1200-1400 |
| 225 |
114.3 & 127 |
Up to 1000 |
| 240 |
114.3 & 127 |
1200-1600 |
| 275 |
139.7, 152.4, 159 |
500-2000 |
| 290 |
168.3 |
500-2000 |
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| Roller Centre For Flat Carrying Shape M from Stringer top |
100mm for all belt width |
| Return Roller Centre (C) from stringer bottom side. |
160mm up to 139.7mm roller diameter (D)
200 mm 152.4mm&168.3 mm roller diameter(D) |
| Troughing Angle (θ) |
0° for Shape M
10° & 15° Shall be used for Idler Sets of Shape N as per requirement of design
20°/25°/30°/35°/40°/45°/50° Shall be used for Shape M as per requirement of design. |
| Carrying Width (E) |
It’s Vary with different Troughing Angle and different Roller Diameter |
| Roll height (F) |
It’s Vary with different Troughing Angle and different Roller Diameter |
| Slots Hole Centre (G) For Carrying frame |
200mm for Shape N&P and 70 mm For Shape M with slot size 30mmX18mm |
| Slots Hole Centre (H) For Return Idler Bracket |
65mm for Shape M and 100 mm For Shape N |
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