Brochure

157
DriveTighteners
Malleable
* For use with Drive Tighteners shown on pages 155 and 156 and above with shaft lengths indicated.
s For use with H-1 1/2 or P1-5/8 IDLER BUSHINGS shown on page159.
n See page 168 for factors to use for Average Life of more or less than 2500 hours.
All Browning Stock Idlers furnished with needle bearings have retainers that insure minimum internal friction and wear by separating the needle rollers. These bearings are inset
approximately 1/8” on either end of the Idler hubs to form a grease cavity.
Part
No.
Shaft
DIMENSIONS Wt.
Lbs.
A
Bs
C D H
Js
K M S.L.
* Ss
FFTN1
N1
2 3/8” 1 3/4” 1 1/8” .500” 1/4” 9/32” 3/8 - 16 1/2” 1 1/2” 1/4” .3
FFTH
None
4 3 2 - 1/2 9/16 1/2 - 13 15/16 - 3/8 .9
FFTP
None
4 3 2 - 1/2 9/16 5/8 - 11 15/16 - 3/8 .9
FFTQ
None
4 3 2 - 1/2 9/16 3/4 - 10 15/16 - 3/8 .8
FFTQ
N2
4 3 2 1.000 1/2 9/16 3/4 - 10 15/16 2 1/8 3/8 1.6
FFTQ
N3
4 3 2 1.000 1/2 9/16 3/4 - 10 15/16 3 1/8 3/8 1.8
FFTQ
N4
4 3 2 1.000 1/2 9/16 3/4 - 10 15/16 4 1/8 3/8 2.1
FFTQ-1
None
7 1/2 6 3 1/2 - 3/4 15/16 1 - 8 1 7/16 - 5/8 4.8
FFTQ-1
N5
7 1/2 6 3 1/2 1.500 3/4 15/16 1 - 8 1 7/16 4 5/8 7.3
FFTQ-1
N6
7 1/2 6 3 1/2 1.500 3/4 15/16 1 - 8 1 7/16 6 5/8 8.5
s Holes are cast, some variations maybe expected.
 Shaft is included.
 No shaft is required when used with Idler Bushings shown on page 159.
 Shaft must be ordered separately.
Part
No.
DIMENSIONS Wt.
Lbs.
O.L. D K T S.L.
N1 2 5/16” .500” 3/8 - 16 7/16” 1 1/2” .13
N2 3 3/8 1.000 3/4 - 10 7/8 2 1/8 .6
N3 4 3/8 1.000 3/4 - 10 7/8 3 1/8 .9
N4 5 1/8 1.000 3/4 - 10 7/8 4 1/8 1.0
N5 5 11/16 1.500 1 - 8 1 5/16 4 2.8
N6 7 11/16 1.500 1 - 8 1 5/16 6 3.8
Part
No.
Type
Shaft DIMENSIONS
Wt.
Lbs.
Radial Load Capacity in Pounds Based on
2500 Hours Average Life at rpm Shown n
Length O.D. D B H W F L P C 100 500 1000 1500 2000 2500 3000 3500
N1D05F 1 1 1/2”* 1 3/4” 1 3/8 1/2” 1 1/4” 3/4” 9/16” 3/4” 1/8” 1/8” .3 665 406 331 294 269 250 237 226
N4D1F 1 2 1/8* 4 3/8 4 1 1 7/8 1 7/16 1 1/16 1 1/4 1/8” 5/16 3.0 2927 1787 1458 1295 1185 1104 1047 997
N4D2F 1 3 1/8* 4 3/8 4 1 1 7/8 2 7/16 2 1/16 2 1/2 1/8” 1/16 5.0 4348 2654 2166 1922 1760 1640 1544 1482
N4D3F 1 4 1/8* 4 3/8 4 1 1 7/8 3 7/16 3 1/16 3 1/2 1/8” 1/16 7.8 5854 3574 2916 2590 2370 2208 2094 1994
N4D4F 1 6* 7 4 1 1/2 2 5/8 5 4 1/2 4 1/8” 1 1/8 22.5 5884 3592 2930 2602 2380 2218 2102 2004
N4D6F 1 6* 7 4 1 1/2 2 5/8 6 3/4 6 1/4 5 1/8” 1 7/8 29.5 5884 3592 2930 2602 2380 2218 2102 2004
4D1FH 2
H1s
4 3/8 4
s
- 1 7/16 1 1/16 7/8 - 9/16 3.4 1518 1016 854 772 718 678 648 624
4D2FP 2
P1s
4 3/8 4
s
- 2 7/16 2 1/16 1 5/16 - 1 1/8 4.6 1518 1016 854 772 718 678 648 624
4D3FP 2
P1s
4 3/8 4
s
- 3 7/16 3 1/16 1 5/16 - 2 1/8 5.6 1518 1016 854 772 718 678 648 624
TableNo.3 FlatFaceIdlers
TableNo.2 TightenersShafts
TableNo.1 FixedFlangeTighteners
Part
No.
Shaft
Length
Belt
Size
DIMENSIONS
(inches)
Wt.
Lbs.
Radial Load Capacity in Pounds Based on
2500 Hours Average Life at rpm Shown n
O.D. 100 500 1000 1500 2000 2500 3000 3500
NOK17 1 1/2" 3L 1.92" .1 665 406 331 294 269 250 237 226
NAK25 1 1/2 4L or A 2.50 .3 665 406 331 294 269 250 237 226
NAK30 1 1/2 4L or A 3.05 .5 665 406 331 294 269 250 237 226
NAK41 2 1/8 4L or A 3.95 1.0 2174 1327 1083 961 880 820 772 741
NBK40 2 1/8 5L or B 3.96 1.1 2174 1327 1083 961 880 820 772 741
NBK52 2 1/8 5L or B 4.96 1.6 2174 1327 1083 961 880 820 772 741
TableNo.4 V-BeltSheaveIdlers
K - TAP
S - BOLT SIZE
H
M S.L. C
B A D
J