Commonly used in applications running lighter rolls of material and/or at higher speeds (ex: laminating, sheeting, paper, corrugated, etc), Montalvo Defender Series Pneumomechanical Core Chucks are designed to ensure maximum grip, stability, and performance, delivering constant engagement to your core regardless of torque and direction.
- Overview
- Models & Drawings
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Specially Designed Lug Return Mechanism
Delivers 10x more force to lugs for 100% simultaneous return to rest position every time
Wide Lugs
Ensure minimal to no damage
Superior Carbon Steel Construction
Pneumatic engagement of wider lugs ensure minimal to no core damage while ensuring maximum operator and roll safety, with a more durable, longer service life
Available Core Adapters – Quick and Easy Core Size Changes
For applications utilizing multiple core sizes, D-PA Core Chuck are available with a wide range of aluminum adapters for different Core ID’s.
Optional Vulcanized Rubber Lugs
Ideal for Steel or PVC cores
Rugged, Durable, Dependable Performance for Lower Total Cost of Ownership
Ideal for Unwind, Flying, or Zero Speed Splicing
Drop-In Replacement Design
For easy upgrading of existing installations
Positive and Negative Air Expansion Models
Durable Construction
For the heaviest loads and longest duty cycles
For additional information on our Pneumatically Activated Core Chucks download the Datasheet .
Single Core – Positive Engagement
For roll weights up to 8,992 lbs (40,000 N)
PA Positive Engagement Models
Model # | Core in (mm) |
Expansion Range in (mm) |
Max. Load lb (N) |
Max. Torque in-lb (Nm) |
Drawings | Price Request |
---|---|---|---|---|---|---|
PA-S-70-P | 2.76 (70) | 2.7-3.07 (68.5-78) | 2,023 (9,000) | 3,451 (390) | Request PA-S-70-P Drawing | Quote |
PA-S-3-P | 3 (76) | 2.93-3.3 (74.5-83.8) | 2,697 (12,000) | 5,310 (600) | Request PA-S-3-P Drawing | Quote |
PA-S-4-P | 4 (100) | 3.88-4.23 (98.5-107.5) | 3,596 (16,000) | 7,965 (900) | Request PA-S-4-P Drawing | Quote |
PA-S-5-P | 5 (127) | 4.86-5.22 (123.5-132.5) | 6,744 (30,000) | 19,471 (2,200) | Request PA-S-5-P Drawing | Quote |
PA-S-6-P | 6 (152) | 5.85-6.18 (148.5-157) | 8,992 (40,000) | 39,828 (4,500) | Request PA-S-6-P Drawing | Quote |
*P = Positive Engagement
*120mm, 125mm Core model’s also available
Single Core – Negative Engagement
For roll weights up to 2,248 lbs (10,000 N)
PA Negative Engagement Models
Model # | Core in (mm) |
Expansion Range in (mm) |
Max. Load lb (N) |
Drawings | Price Request |
---|---|---|---|---|---|
PA-S-70-N | 2.76 (70) |
2.7-3.05 (68.5-77.5) |
2,248 (10,000) |
Request PA-S-70-N Drawing | Quote |
PA-S-3-N | 3 (76) |
2.93-3.3 (74.5-83.8) |
2,248 (10,000) |
Request PA-S-3-N Drawing | Quote |
PA-S-6-N | 6 (152) |
5.85-6.2 (148.5-157.5) |
2,248 (10,000) |
Request PA-S-6-N Drawing | Quote |
*N = Negative Engagement
Adapters
Available Aluminum Adapters
Model # | Fits Chuck | Core Adapter Size | Expansion Range in (mm) |
Drawings | Price Request |
---|---|---|---|---|---|
PA-S-70-A4 | PA-S-70-P PA-S-70-N |
4″ | 3.86-4.21 (98-107) | Request 1200-T Drawing | Quote |
PA-S-70-A6 | PA-S-70-P PA-S-70-N |
6″ | 5.85-6.2 (148.5-157.5) | Request PA-S-70-A6 Drawing | Quote |
PA-S-70-A8 | PA-S-70-P PA-S-70-N |
8″ | 7.81-8.17 (198.5-207.5) | Request PA-S-70-A8 Drawing | Quote |
PA-S-70-A10 | PA-S-70-P PA-S-70-N |
10″ | 8.76-10.12 (248-257) | Request PA-S-70-A10 Drawing | Quote |
PA-S-3-A5 | PA-S-3-P PA-S-3-N |
5″ | 4.92-5.29 (125-134.4) | Request PA-S-3-A5 Drawing | Quote |
PA-S-3-A6 | PA-S-3-P PA-S-3-N |
6″ | 5.85-6.2 (148.5-157.5) | Request PA-S-3-A6 Drawing | Quote |
PA-S-4-A8 | PA-S-4-P PA-S-4-N |
8″ | 7.81-8.17 (198.5-207.5) | Request PA-S-4-A8 Drawing | Quote |
PA-S-4-A10 | PA-S-4-P PA-S-4-N |
10″ | 9.78-10.14 (248.5-257.5) | Request PA-S-4-A10 Drawing | Quote |
PA-S-6-A8 | PA-S-6-P PA-S-6-N |
8″ | 7.81-8.17 (198.5-207.5) | Request PA-S-6-A8 Drawing | Quote |
PA-S-6-A10 | PA-S-6-P PA-S-6-N |
10″ | 9.78-10.14 (248.5-257.5) | Request PA-S-6-A10 Drawing | Quote |
PA-S-6-A12 | PA-S-6-P PA-S-6-N |
12″ | 11.89-12.24 (302-311) | Request PA-S-6-A12 Drawing | Quote |
*Other Core ID Adapters Available Upon Request