WTS001_p50-68 6/14/07 10:46 AM Page 57
Precision Compression Clamp
Systems
PRECISION COMPRESSION MOUNTING CLAMP SYSTEMS
Wakefield Engineering compression pack heat sinks and clamp systems provide electrical and mounting and cooling are available separately for all standard compression requirements from
industrial equipment manufacturers with complete system solutions for proper installation and 800 lbs (362.9 kg) to 16,000 lbs (7,257.5 kg) force in both natural and forced convection ap-
heat dissipation for high-power compression pack semiconductor. All components for device plications.
Clamp Assembly Maximum Clamping Force Maximum Diameter (Ref) Crossbar Stud Centerline
Series Force Range Power Disc Device to Centerline Dimension
130 Series 800 lbs (362.9 kg) - 2,000 lbs (907.2 kg) 2.25 in. (57.2 mm) 2.750 in. (69.9 mm) Ref
139 Series 3,000 lbs (1,360.8 kg) and 5,000 lbs (2,268.0 kg) 3.50 in. (88.9 mm) 4.000 in. (101.6 mm) Ref
143 Series 1,000 lbs (453.6 kg) - 6,000 lbs (2,721.6 kg) 3.50 in. (88.9 mm) 4.000 in. (101.6 mm) Ref
144 Series 1,000 lbs (453.6 kg) - 6,000 lbs (2,721.6 kg) 4.00 in. (101.6 mm) 4.625 in. (117.5 mm) Ref
145 Series 2,000 lbs (907.2 kg) - 10,000 lbs (4,535.9 kg) 4.50 in. (114.3 mm) 5.500 in. (139.7 mm) Ref
146 Series 8,000 lbs (3,628.8 kg) - 16,000 lbs (7,257.5 kg) 5.25 in. (133.4 mm) 6.000 in. (152.4 mm) Ref
131/132/133 Series High-Performance Press Pack Heat Sinks
These high-quality mounting clamp assemblies are the worldwide standard for mounting, lected (based on maximum clamping force required), will provide the necessary vertical clear-
compression, and clamping press-pack SCR, thyristor, rectifier, and other high power disc ance space. For the 130 and 139 Series, this determination is made by subtracting the chosen
packaged devices utilized in power distribution equipment, industrial controls, transportation spring assembly Z dimension (refer to dimensional tables) from the crossbar assembly X
systems, and power supply and conversion systems. dimension minimum and maximum values, to calculate the available device mounting space
clearance for the particular assembly combination. Spring assembly Z dimension is the di-
Clamp assemblies will accommodate devices with overall case diameters to 5.25 in. (133.4 mension measured from the spring assembly device mounting surface to the spring assembly
mm) maximum. Vertical device mounting space available for assemblies is determined by se- top surface. Some series have fixed dimensions for alpha characters. All spring assemblies are
lecting an appropriate series crossbar by length which, when a series spring assembly is se- designed with a force indicator gauge.
Compression Mounting Clamp Assemblies for Semiconductors to 2.25 in. (57.2mm) Diameter
130 SERIES
130 SERIES CROSSBAR
MECHANICAL DIMENSIONS
800 lb - 2,000 lb (362.8 kg - 907.2 kg)
Crossbar Device Mounting, Surface to Spring Assembly
Top Surface Dimension
Model X Dimension Weight
No. Min. Max. lbs. (grams)
In. (mm)
130-A 1.74 (44.2) - 2.12 (53.8) 0.4 (181.44)
130-B 2.05 (52.1) - 2.43 (61.7) 0.418 (189.60)
130-C 2.36 (59.9) - 2.74 (69.6) 0.427 (193.68)
130-D 2.67 (67.8) - 3.05 (77.5) 0.437 (198.22)
130-E 2.98 (75.7) - 3.36 (85.3) 0.447 (202.76)
130-F 3.29 (83.6) - 3.67 (93.2) 0.461 (209.11)
130-G 3.60 (91.4) - 3.98 (101.1) 0.476 (215.91)
130-H 3.91 (99.3) - 4.29 (109.0) 0.486 (220.45)
130-J 4.22 (107.2) - 4.60 (116.8) 0.497 (225.44)
130-K 4.53(115.1) - 4.91 (124.7) 0.51 (231.33)
130-L 4.34 (122.9) - 5.22 (132.6) 0.52 (235.87)
130-M 5.15 (130.8) - 5.53 (140.5) 0.534 (242.22)
130-N 5.46 (138.7) - 5.84 (147.3) 0.544 (246.75)
130-P 5.77 (146.6) - 6.15 (156.2) 0.559 (253.56)
130 SERIES SPRING ASSEMBLY
Model No. of ZDim. Max Force Weight
No. Leaves in. (mm) lb (kg) lbs (gms)
130-1 2 0.90 (22.9) 2,000 (907.2) 0.331 (150.14)
130-2 2 0.50 (12.7) 800 (362.8) 0.19 (86.18)
130-3 3 0.61 (15.5) 1,200 (544.3) 0.219 (99.34)
130-4 4 0.72 (18.3) 1,600 (727.8) 0.333 (151.05)
Dimensions: in. (mm)
130-5 5 0.83 (21.1) 2,000 (907.2) 0.408 (185.07)
Notes:
1. Spring assemblies are stainless steel leaves with a force indicator
gauge, except the lowest cost Type 130-1 spring assembly manufac-
tured from automotive grade stainless steel.
Order Guide: Dimensions:
Order Crossbar and Spring Assembly in. (mm)
separately by type number from table. lb. (kg)
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Precision Compression Clamp
Systems
PRECISION COMPRESSION MOUNTING CLAMP SYSTEMS
Compression mounting clamp assemblies for semiconductors to 3.50 in. (88.9 mm) Diameter
139 SERIES
139 SERIES CROSSBAR
3,000 lb - 5,000 lb, (1,360.8 kg - 2,268.0 kg), Crossbar Device Mounting, Surface to Spring Assembly, Top Surface Dimension
139-3 SERIES CROSSBAR - 3,000 LB (1,360.8) 139-5 SERIES CROSSBAR - 5,000 LB (2,268.0)
Model X Dimension Weight Model X Dimension Weight
No. Min Max lbs. (grams) No. Min Max lbs. (grams)
in. (mm) in. (mm)
139-3A 1.52 (38.6) 1.89 (48.0) 0.689 (312.52) 139-5A 1.52 (38.6) 1.89 (48.0) 0.94 (426.38)
139-3B 1.83 (46.5) 2.21 (56.1) 0.7 (317.51) 139-5B 1.83 (46.5) 2.21 (56.1) 0.96 (435.45)
139-3C 2.14 (54.4) 2.52 (64.0) 0.706 (320.24) 139-5C 2.14 (54.4) 2.52 (64.0) 0.98 (444.52)
139-3D 2.45 (62.2) 2.83 (71.9) 0.721 (327.04) 139-5D 2.45 (62.2) 2.83 (71.9) 1.01 (458.13)
139-3E 2.77 (70.4) 3.14 (79.8) 0.732 (332.03) 139-5E 2.77 (70.4) 3.14 (79.8) 1.02 (462.66)
139-3F 3.08 (78.2) 3.45 (87.6) 0.741(336.11) 139-5F 3.08 (78.2) 3.45 (87.6) 1.033 (468.56)
139-3G 3.39 (86.1) 3.77 (95.8) 0.762 (345.64) 139-5G 3.39 (86.1) 3.77 (95.8) 1.053 (477.63)
139-3H 3.70 (94.0) 4.08 (103.6) 0.773 (350.63) 139-5H 3.70 (94.0) 4.08 (103.6) 1.074 (487.64)
130-3J 4.01 (101.9 4.39 (111.5) 0.784 (355.62) 139-5J 4.33 (101.9) 4.39 (111.5) 1.064 (482.62)
139-3K 4.33 (110.0) 4.70 (119.4) 0.79 (358.34) 139-5K 4.33 (110.0) 4.70 (119.4) 1.075 (487.61)
139-3L 4.64 (117.9) 5.01 (127.3) 0.793 (359.70) 139-5L 4.64 (117.9) 5.01 (127.3) 1.088 (493.51)
139-3M 4.95 (125.7) 5.33 (135.4) 0.796 (361.06) 139-5M 4.95 (125.7) 5.33 (135.4) 1.102 (499.86)
139-3N 5.26 (133.6) 5.64 (143.3) 0.832 (377.39) 139-5N 5.26 (133.6) 5.64 (143.3) 1.11 (503.49)
139-3P 5.57 (141.5) 5.95 (151.1) 0.838 (380.11) 139-5P 5.57 (141.5) 5.95 (151.1) 1.171 (531.16)
CROSSBAR HEIGHT AND WIDTH
Order Guide: Dimensions:
Series Height Reference Width B
Order Crossbar and Spring Assembly in. (mm)
Number in. (mm) Reference in. (mm)
separately by type number from table. lb. (kg)
139-3 0.72 (18.3) 0.95 (24.1)
139-5 1.02 (25.9) 0.83 (21.1)
139 SERIES SPRING ASSEMBLY
Model Number of Dimension Maximum Force
Number Leaves in. (mm) lb. (kg)
139-1 1 0.87(22.1) 3,000 (1,360.8)
139-2 2 1.25(31.8) 5,000 (2,268.0)
MECHANICAL DIMENSIONS
Dimensions: in. (mm)
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