2-STAGE EJECTORS Size and Quantity Selection Guidelines
• Select 20mm diameter (small), 26mm diameter (medium), or 32mm diameter (large) 2-Stage Ejector based on the width of the mold base (large molds, thick plates or heavy load applications may require the next size assembly). • Determine the travel range for each ejection stroke (first and second), being careful not to exceed the maximum stroke specified for the chosen 2-Stage Ejector style and size. This selection is based on the specific application.
• In general, a minimum of two 2-Stage Ejectors are required. For larger molds, thick plates, or an application where loads are near maximum, additional assemblies and/or larger assemblies may be required. An application must never exceed the maximum recommended load values. • A balanced load must be maintained to avoid cocking and binding which could cause severe overloading. Only one size of 2-Stage Ejectors should be used in each mold base.
MAXIMUM RECOMMENDED LOAD VALUES (PER ASS’Y) STATIC DYNAMIC
2-STAGE EJECTOR ASSEMBLY ITEM NUMBER
BASIC CENTER ROD DIA
RECOMMENDED MAXIMUM MOLD BASE WIDTH
STROKE 1
STROKE 2
MINIMUM MAXIMUM MINIMUM MAXIMUM
2-STAGE EJECTOR TOP LAST (TS TL)
Up to 200mm, 1 TL20 Up to 450mm, 2 TL20
4.0
79.0
4.0
79.0
5.8 kN
0.58 kN mm
TSTL20A
20mm (Small)
Up to 8”, 1 TL20 Up to 18”, 2 TL20
.16
3.11
.16
3.11
1300 lbf
130.0 lbf
in
Up to 450mm, 1 TL26 Up to 600mm, 2 TL26
6.0
84.0
6.0
84.0
10.8 kN 1.08 kN mm
TSTL26A 26mm (Medium)
Up to 18”, 1 TL26 Up to 26”, 2 TL26
.24
3.31
.24
3.31
2428 lbf
242.8 lbf
in
Up to 600mm, 1 TL32 Up to 900mm, 2 TL32 Up to 26”, 1 TL32 Up to 35.5”, 2 TL32
8.0
92.0
8.0
92.0
19.6 kN 1.96 kN mm
TSTL32A
32mm (Large)
.31
3.62
.31
3.62
4406 lbf
440.6 lbf
in
2-STAGE EJECTOR TOP LAST (TS BL)
Up to 200mm, 1 BL20 Up to 450mm, 2 BL20
8.0
82.0
12.0
82.0
5.8 kN
0.58 kN mm
TSBL20A*
20mm (Small)
Up to 8”, 1 BL20 Up to 18”, 2 BL20
.32
3.23
.47
3.23
1300 lbf
130.0 lbf
in
Up to 450mm, 1 BL26 Up to 600mm, 2 BL26
10.0
92.0
18.0
92.0
10.8 kN 1.08 kN mm
TSBL26A*
26mm (Medium)
Up to 18”, 1 BL26 Up to 26”, 2 BL26
.40
3.62
.71
3.62
2428 lbf
242.8 lbf
in
Up to 600mm, 1 BL32 Up to 900mm, 2 BL32 Up to 26”, 1 BL32 Up to 35.5”, 2 BL32
12.0
102.0
24.0
102.0
19.6 kN 1.96 kN mm
TSBL32A*
32mm (Large)
.47
4.02
.95
4.02
4406 lbf
440.6 lbf
in
*Puller Pins are not included with BL Assemblies and must be ordered separately.
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