Contact:
Wakefield-Vette
33 Bridge St.
Pelham, NH 03076
603-635-2800
info@Wakefield-Vette.com
www.Wakefield-Vette.com
Alves Blue Block Universal Joints… split block design makes the difference…
Built Better and cost less… the ultimate
products in motion linkage. All wear parts
are heat treated for increased life. The
split block design provides a positive
lubrication reservoir for long life and low
wear. The pins move resistance free
within the bushings, while the bushings
remained fixed with the yokes. Standard
joints produced from high- grade alloy
steel for extra durability and each part of
the same joint is completely
interchangeable. All parts are produced
to extremely close tolerances, and fitted
exactly to meet the most rigid backlash
requirements. The Blue Block design is
available in stainless steel, with keyways
and with many custom configurations.
Protective coverings are also available
for use in contaminated atmospheres.
Single Joints
SPECIFICATIONS OF STANDARD JOINTS
CAT
CAT
A
NO
NO
O.D.
B
D
D
C
APPROX
STATIC
HOLE
WEIGHT
BREAKING
SOLID
BORED
0
0.002
HUBS
HUBS
-0.015
+- 1/32
-0.001
0.002
DEPTH
LBS
-0.001
x
BS-375
BB-375
3/8
1-3/4
3/16
1/4
19/32
LENGTH BORE MAX BORE
TORQUE
INCH/LBS
.09
150
BS-500
BB-500
1/2
2
1/4
3/8
19/32
.12
410
BS-625
BB-625
5/8
2-1/4
5/16
1/2
23/32
.25
890
BS-750
BB-750
3/4
2-11/16
3/8
5/8
7/8
0.31
1,500
BS-875
BB-875
7/8
3
7/16
11/16
1
0.5
1,650
BS-1000
BB-1000
1
3-3/3
1/2
3/4
1-1/8
0.62
3,000
BS-1125
BB-1125
1-1/8
3-1/2
9/16
7/8
1-1/8
0.87
3,500
BS-1250
BB1520
1-1/4
3-3/4
5/8
1
1-1/8
1.13
5,400
BS-1500
BB-1500
1-1/2
4-1/4
3/4
1-1/8
1-1/8
1.75
8,800
BS-1750
BB-1750
1-3/4
5
7/8
1-1/4
1-7/16
2.93
14,500
ABOVE JOINTS DO NOT HAVE BEARINGS
Note how the unique
construction of the split
block forms a lubrication
chamber.
The oil enters through the
oil hole in one pin and into
the reservoir. As the speed
is increased, oil is thrown
centrifugally to thoroughly
lubricate each pin and
bushing.
BS-2000
BB-2000
2
6
1
1-1/2
1-13/16
4.5
22,000
BS-2500
BB-2500
2-1/2
7
1-1/4
1 3/4
1-7/8
7.25
31,500
BS3000
BB-3000
3
9
1-1/2
2
2-15/16
15.5
55,000
BS-4000
BB-4000
4
10-5/8
2
2-1/2
3-1/2
35.5
127,000
OUBLE U-JOINTS FOR MORE ANGULAR FLEXIBILITY AVAILABLE IN ABOVE SIZES
Repair Kits
Alves on site repair kits can be used
to repair any size Blue Block U-Joint,
Each kit contains (4) bushings, (3)
solid bushing pins, (1) oilier bushing
pin, (2) centering blocks, (1) nut and
(1) bolt
Alves Solid Block Universal Joints
Standard pin and block
type manufactured
from high-grade alloy
steel for extra
durability, strength and
long life. Ideal for
angles up to 25
degrees and speeds to
1750 rpm. Available for
greater angles and
higher speeds; with
heat-treated yokes and
matched components
for heavy-duty
applications; and with
round, hex, splined, or
keyway bores. Also
available in stainless
steel alloys, bronze
and other materials for
corrosive, sanitation or
similar applications.
Single Joints
Specifications Of Standard Joints
CAT
CAT
A
B
D
D
C
NO
NO
O.D.
LENGTH
BORE
MAX BORE
HOLE
APPROX
STATIC
SOLID
BORED
0
0.002
0.002
DEPTH
WEIGHT
TORQUE
HUBS
HUBS
-0.015
-0.001
-0.001
0.03125
LBS
INCH/LBS
SS-375
SB-375
3/8
1-3/1
3/16
1/1
19/32
0.09
150
SS-500
SB-500
1/2
2
1/4
3/8
19/32
0.12
410
SS-625
SB-625
5/8
2-1/4
5/16
1/2
23/32
0.25
890
SS-750
SB-750
3/4
2-11/16
3/8
5/8
7/8
0.31
1,500
SS-875
SB-875
7/8
3
7/16
11/16
1
0.5
1,650
SS-1000
SB-1000
1
3-3/8
1/2
3/4
1-1/8
0.62
3,000
BREAKING
SS-1125
SB-1 25
1-1/8
3-1/2
9/16
7/8
1-1/8
0.87
3,500
SS-1250
SB-1250
1-1/4
3-3/4
5/8
1
1-1/8
1.13
5,400
SS-1500
SB-1500
1-1/2
4-1/4
3/4
1-1/8
1-1/8
1.75
8,800
SS-1750
SB-1750
1-3/4
5
7/8
1-1/4
1-7/16
2.93
14,500
SS-2000
SB-2000
2
6
1
1-1/2
1-13/16
4.5
22,000
SS-2500
SB-2500
2-1/2
7
1-1/4
1-3/4
1-7/8
7.25
31,500
SS-3000
SB-3000
3
9
1-1/2
2
2-15/16
15.5
55,000
SS-4000
SB-4000
4
10-5/8
2
2-1/2
3-1/2
35.5
127,000
DOUBLE U JOINTS FOR MORE ANGULAR FLEXIBILITY AVAILABLE IN BOTH SIZES
Alves “Double” Universal Joints
SINGLE JOINTS
Connects two Blue Block, Hex Block
or Solid Block Joints to compensate
for shaft separation and parallel
misalignment. Available with round
hex, splined or keyway bores. Catalog
numbers in table are for Blue Block
style, Butt type. Consult factory for
Hex and Solid Block styles, Shaft and
Center Types, and for spring loaded
assemblies, such as those used for
multi-spindle drills.
SPECIFICATIONS OF STANDARD JOINTS
CAT
CAT
A
B
D
DEPTH
C
APPROX
NO
NO
O.D.
LENGTH
BORE
MAX
HOLE
WEIGHT
SOLID
BORED
+.000
+.002
BORE
DEPTH
LBS
HUBS
HUBS
-0.015
+ 1/32
-.001
+.002
+ 1/32
BS-375 -D
BB-375 -D
3/8
3-1/2
3/16
1/4
19/32
.13
BS-500 -D
BB-500 -D
1/2
4
1/4
3/8
19/32
.20
BS-625 -D
BB-625 -D
5/8
4-1/2
1/2
1/2
23/32
.40
ABOVE JOINTS DO NOT HAVE BEARINGS
BS-750 -D
BB-750-D
3/4
5-3/8
3/8
5/8
7/8
.56
BS-875 -D
BB-875-D
7/8
6
7/16
11/16
1
.87
BS-1000-D
BB-1000-D
1
6-3/4
1/2
3/4
1-1/8
1.17
BS-1125-D
BB-1125-D
1-1/8
7
9/16
7/8
1-1/8
1.58
BS-1250D
BB-1250-D
1-1/4
7-1/2
5/8
1
1-1/8
2.07
BS-1500-D
BB-1500-D
1-1/2
8-1/2
3/4
1-1/8
1-1/8
3.25
BS-1750-D
BB-1750-D
1-3/4
10
7/8
1-1/4
1-7/16
5.43
BS-2000-D
BB-2000-D
2
12
1
1-1/2
1-13/16
8.00
BS-2500-D
BB-2500-D
2-1/2
14
1-1/4
1-0/4
1-7/8
14.45
BS-3000-D
BB-3000-D
3
18
1-1/22
2
2-15/16
28.50
BS-4000-D
BB-4000-D
4
21-1/4
2
2-1/2
3-1/2
63.00
Note: Both input and output speeds are near constant velocity.
Alves Low Cost, Self Lubricating, Hex Block Universal Joint
SINGLE JOINTS
SPECIFICATIONS OF STANDARD
CAT
CAT
A
B
D
D
C
NO
NO
O.D
LENGTH
BORE
MAX BORE
HOLE
SOLID
BORED
0
0.002
0.002
DEPTH
HUBS
HUBS
-0.015
+ 1/32
-0.001
-0.001
+ 1/32
SOLID
BORED
HS-625
HB-625
5/8
2-1/4
5/16
1/2
51/64
19
15
HS-750
HB-750
3/4
2-11/16
3/8
5/8
31/32
31
25
APPROX WEIGHT
IN LBS
HS-875
HB-875
7/8
3
7/16
11-16
1- 5/64
46
32
HS-1000
HB-1000
1
3-3/8
1/2
3/4
1- 11/16
67
61
HS-1250
HB-1250
1-1/4
3-3/4
5/8
1
2- 1/4
1.17
90
DOUBLE U-JOINTS FOR MORE ANGULAR FLEXIBILITY AVAILABLE IN ABOVE SIZES
An inexpensive riveted joint,
designed for low torque…manual,
intermittent or light duty. Unique
center block is produced from out
own proprietary powdered metal
formulation and sintering
process. With its own selfcontained oil supply the block not
only acts as a carrying member
for the cross-pins, but are also as
a continuous lubricates bearing
block. As a result, the Hex Block
Joint lasts longer than other
comparable units and is ideal for
applications where oiling is
required but impractical because
of the universal joint location.
Maximum operating angle on
standard models is 35 degrees.
Hex Block Joints can be special
ordered for greater angles and
other characteristics.
Alves Needle Bearing Universal Joints
SINGLE JOINTS
Boot Kits
SPECIFICATIONS OF STANDARD JOINTS
CAT
CAT
A
B
D
D
C
NO
NO
O.D
LENGTH
BORE
MAX BORE
HOLE
SOLID
BORED
0
0.002
0.002
DEPTH
SWING
WEIGHT
HUBS
HUBS
-0.015
+ 1/32
-0.001
-0.001
+ 1/32
DIA
LBS
APPROX
BS-750-N
BB-750-N
3/4
2-1/4
5/16
1/2
51/64
7/8
15
BS-1000-N
BB-1000-N
1
2-11/16
3/8
5/8
31/32
1-1/8
25
BS-1250-N
BB-1250-N
1-1/4
3
7/16
11/16
1-5/64
1-1/8
32
BS-1500-N
BB-1500-N
1-1/2
3-3/8
1/2
3/4
1-13/64
1-1/8
61
BS-2000-N
BB-2000-N
2
3/4
5/8
1
1-7/32
1-13/16
90
These are the only repairable needle bearing joints on
the market. Using the Alves Blue Block design, with
modified and special hardened pins, and the highest
quality pre-lubricated and sealed needle bearings in
the hubs, they are easily repaired on site using the
inexpensive special repair kit available from your local
distributor, or from Alves direct. They are physically
interchangeable with competing units and provide the
precision and reliability required for demanding
applications requiring speeds to 6,000 rpm and
operating angles to 25 degrees. Greater angular
operation can be achieved by utilizing a double
universal joint.
Protects joints from dirt
and contaminants. Adds
lubrication capacity,
quickly and easily replaced
in the field. Plastic straps
standard. Stainless steel
straps available.
BOOT NO.
U-Joint
Std. Boot
375- Boot
3/8
1-1/32
500- Boot
1/2
1-1/4
625- Boot
5/8
1-1/2
750- Boot
3/4
1-3/4
875- Boot
7/8
2
1000- Boot
1
2-9/32
1125- Boot
1-1/8
2-9/16
1250- Boot
1-1/4
2-7/8
1500- Boot
1-1/2
3-1/4
1750- Boot
1-3/4
3-5/8
2000- Boot
2
4-17/32
2500- Boot
2-1/2
3000- Boot
3
4000- Boot
4
Universal Joint Cross Reference Guide
Custom Universal Joint Drawings
BB-1250-032-01A
BB-1250-276-01A
BB-1250-032-03A
BB-1250-276-02A
Custom Universal Joint Drawings
BB-1250-010-02A
BB-1250
BB-1000
BS-1250