Cooper B-Line B3120 User Manual
Pipe Rollers & Roller Supports
Fig. B3120 - Roller Chair (TOLCO Fig. 325)
Size Range: 2" (50mm) thru 24" (600mm) pipe
Material: Cast iron and steel
Function: For supporting pipe where movement may occur due
to thermal expansion. Used when ceiling suspension is impractical.
Appr
ovals:
Conforms to Federal Specification WW
-H-171E &
A-A-1192A, Type 45 and Manufacturers Standardization Society
ANSI/MSS SP-69 & SP-58, Type 44.
Note: When pipe line is insulated, total outside diameter
of pipe and covering should be used to determine size of
hanger; also see B3160 to B3165.
Steel Size
Finish: Plain. Contact Cooper B-Line for alternative finishes and
materials.
Order by: Figure number, pipe size and finish
Note: Not for continuous cycling applications.
Pipe Size A B C (Not Included)
Part No.
in. (mm) in. (mm) in. (mm) in. (mm)
B3120-2 2" (50) 11/4" (31.7) 45/8" (117.5) 11/2" (38.1)3/8"-16 x 11/2"
B3120-21/2 21/2" (65) 11/4" (31.7) 53/8" (136.5) 15/8" (41.3)3/8"-16 x 11/2"
B3120-3 3" (80) 2" (50.8) 6" (152.4) 13/4" (44.4)3/8"-16 x 11/2"
B3120-31/2 31/2" (90) 2" (50.8) 63/4" (171.4) 21/16" (52.4)3/8"-16 x 11/2"
B3120-4 4" (100) 2" (50.8) 71/4" (184.1) 25/16" (58.7)1/2"-13 x 11/2"
B3120-5 5" (125) 3" (76.2) 87/16" (214.3) 21/2" (63.5)1/2"-13 x 11/2"
B3120-6 6" (150) 31/8" (79.4) 93/4" (247.6) 23/4" (69.8)1/2"-13 x 11/2"
B3120-8 8" (200) 33/8" (85.7) 12" (304.8) 3" (76.2)5/8"-11 x 11/2"
B3120-10 10" (250) 51/4" (133.3) 147/16" (366.7) 35/8" (92.1)
B3120-12 12" (300) 51/2" (139.7) 165/8" (422.3) 41/8" (104.8)
B3120-14 14" (350) 6" (152.4) 181/4" (463.5) 45/8" (117.5)
B3120-16 16" (400) 8" (203.2) 21" (533.4) 5" (127.0)5/8"-11 x 21/2"
B3120-18 18" (450) 9" (228.6) 23" (584.2) 51/4" (133.3)5/8"-11 x 21/2"
B3120-20 20" (500) 10" (254.0) 25" (635.0) 53/4" (146.0)
B3120-24 24" (600) 12" (304.8) 30" (762.0) 7" (177.8)
B
A
Center of axle to center of pipe.
E
C
D
Bolt Size
(Not Included)
Recommended
Bolt Size D
5
/8"-11 x 2"
5
/8"-11 x 2"
5
/8"-11 x 2"
3
/4"-10 x 3"
3
/4"-10 x 3"
B
Overall Bolt Length
C
Center of axle to bottom of
steel strap.
E
Notes: If using D.I. pipe
refer to page 295 for
sizing. Non-metallic rollers
with stainless steel chair
and hardware are available
for most sizes (B3120NMÂPipe Size). Contact Cooper
B-Line Engineering for
more information.
Part No.
B3120-2 19/16" (39.7)
B3120-21/2 17/8" (47.6)
B3120-3 23/16" (55.6)
B3120-31/2 21/2" (63.5)
B3120-4 23/4" (69.8)
B3120-5 33/8" (85.7)
in. (mm) in. (mm) lbs. (kN) lbs. (kg)
1
1
1
3
3
3
B3120-6 315/16" (100.0)
B3120-8 51/16" (128.6)
B3120-10 61/4" (158.7)
B3120-12 73/8" (187.3)
E
B3120-14 81/4" (209.5)
B3120-16 91/4" (234.9)
B3120-18 103/8" (263.5)
1
5
5
B3120-20 111/2" (292.1)
B3120-24 133/4" (349.2)
All dimensions in charts and on drawings are in inches. Dimensions shown in parentheses are in millimeters unless otherwise specified.
Steel Size
Design Load
/4" x 11/4" (6.3 x 31.7) 300 (1.33) 119 (54.0)
/4" x 11/4" (6.3 x 31.7) 600 (2.67) 146 (66.2)
/4" x 11/4" (6.3 x 31.7) 600 (2.67) 172 (78.0)
/8" x 11/2" (9.5 x 38.1) 600 (2.67) 264 (119.7)
/8" x 11/2" (9.5 x 38.1) 700 (3.11) 303 (137.4)
/8" x 11/2" (9.5 x 38.1) 700 (3.11) 401 (181.9)
3
/8" x 2" (9.5 x 50.8) 1000 (4.45) 620 (281.2)
3
/8" x 2" (9.5 x 50.8) 1300 (5.78) 874 (396.4)
1
/2" x 2" (12.7 x 50.8) 1700 (7.56) 1270 (576.1)
1
/2" x 2" (12.7 x 50.8) 2300 (10.33) 1918 (870.0)
/2" x 21/2" (12.7 x 63.5) 3100 (13.79) 2629 (1192.5)
/8" x 21/2" (15.9 x 63.5) 3900 (17.35) 3248 (1473.3)
/8" x 21/2" (15.9 x 63.5) 4200 (18.68) 4120 (1868.8)
5
/8" x 3" (15.9 x 76.2) 4500 (20.01) 5630 (3553.7)
3
/4" x 3" (19.0 x 76.2) 6000 (26.69) 7702 (3493.6)
Approx. Wt./100
109
Pipe Supports
Pipe Rollers &
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