3" Mounting Cup with 1" Ball - Comes in Pair - Pack of 4

Wood's Powr-Grip TL3PB1 — 3" Vacuum Mounting Cup with 1" RAM®-Compatible Ball for Flat and Curved Surfaces — Pack of 4

The Wood's Powr-Grip TL3PB1 is a compact 3" vacuum mounting cup with a 1" ball connection point that is compatible with RAM® Equipment Mounting Systems, enabling the attachment of RAM® accessories and mounts to smooth, nonporous surfaces without drilling holes or permanently modifying the surface. Featuring a 3" (8 cm) TL3 standard rubber suction pad, a mounting platform height of 1-7/16" (4 cm), and rated for both flat and curved surfaces with a minimum radius of just 4" (102 mm) — significantly tighter than the LJ45PB1 (12" min.) and TL6PB1 (12" min.). Operable down to 0°F (-18°C). Sold as a Pack of 4 with pad protectors. The TL3PB1 (SKU: 91160, Model: TL3PB1) is manufactured by Wood's Powr-Grip.

The TL3PB1 is the smallest and most curved-surface-capable RAM®-compatible WPG mounting cup. The 4" minimum radius rating is the critical differentiator from the LJ45PB1 and TL6PB1 — both of which require a minimum 12" radius. The TL3PB1’s 3" pad and 4" minimum radius allow it to attach to tight cylindrical surfaces, small-radius curved panels, pipes, tubes, and other curved surfaces that are outside the range of the larger cups. When the surface is flat or has a radius of 12" or greater, the LJ45PB1 or TL6PB1 may be more appropriate depending on the required pad contact area.

Key Features & Benefits

1" RAM®-Compatible Ball — Full RAM® Accessory Ecosystem Compatibility

The TL3PB1’s 1" ball connection point is the standard RAM® ball size used across the RAM® Mounts product line, providing direct compatibility with RAM® ball-and-socket arms, cradles, device holders, camera mounts, instrument brackets, and other RAM®-compatible accessories. RAM® accessories are sold separately and are not included.

4" Minimum Radius — Tightest Curved Surface Rating in the WPG RAM® Mounting Cup Lineup

The TL3PB1 is rated for curved surfaces with a minimum radius of just 4" (102 mm) — the tightest curved surface rating of any RAM®-compatible WPG mounting cup. This allows the TL3PB1 to attach to tight cylindrical surfaces, small-radius curved panels, pipes, tubes, and other curved surfaces where the LJ45PB1 and TL6PB1 (both requiring a minimum 12" radius) cannot form a seal. If your surface has a radius of 12" or greater, the LJ45PB1 or TL6PB1 may provide a larger pad contact area for the same RAM® ball compatibility.

Compact 3" TL3 Pad — Smallest WPG RAM® Mounting Cup

The 3" (8 cm) TL3 pad is the smallest pad in the WPG RAM®-compatible mounting cup lineup, making the TL3PB1 the correct choice for tight contact areas and small-radius curved surfaces where the larger LJ45PB1 (4-1/2") or TL6PB1 (6") pads would not fit or seal. The TL3 pad is not interchangeable with the LJ45 or TL6 pads — replacement pads must be specified as TL3.

No-Drill Equipment Mounting — No Surface Damage — Repositionable

The TL3PB1 eliminates the need for drilling holes when mounting RAM®-compatible equipment and accessories on smooth nonporous surfaces. The vacuum cup base attaches without permanent modification, leaving no marks or damage when removed, and can be repositioned as needed.

1-7/16" Mounting Platform Height — Red-Line Indicator — Pack of 4 with Pad Protectors — 0°F Rating

Mounting platform height is 1-7/16" (4 cm), not including the ball. Red-line indicator warns of any significant vacuum loss. Sold as a Pack of 4 with pad protectors. Rated for operation down to 0°F (-18°C).

Common Applications

Tight-Radius Curved Surface RAM® Mounting

The TL3PB1’s 4" minimum radius rating makes it the only WPG RAM®-compatible mounting cup suitable for tight cylindrical surfaces, small-radius curved panels, pipes, tubes, and other curved surfaces with a radius between 4" and 12". Applications include mounting devices and instruments on cylindrical equipment housings, curved vehicle body panels, and small-radius architectural elements.

Small Contact Area RAM® Device Mounting

When the available smooth contact area on the surface is too small for the 4-1/2" LJ45PB1 or 6" TL6PB1, the TL3PB1’s 3" pad provides RAM® ball compatibility in the smallest available WPG mounting cup footprint.

Vehicle and Equipment Curved Surface Mounting

Operators mounting RAM®-compatible devices on curved vehicle surfaces, cylindrical equipment housings, and other tight-radius smooth nonporous surfaces use the TL3PB1 where the larger cups cannot achieve a seal due to surface curvature.

No-Drill RAM® System Deployment on Protected Surfaces

In environments where drilling is not permitted, the TL3PB1 provides a vacuum-based base for RAM® mounting systems on smooth nonporous surfaces without permanent modification.

Compatible Surfaces

• Flat and curved smooth nonporous surfaces with min. 4" (102 mm) radius
• Cylindrical surfaces and pipes (smooth, nonporous, min. 4" radius)
• Curved vehicle body panels and equipment housings (smooth, nonporous)
• Flat and curved plate glass, tempered glass, and laminated glass
• Polished stone and smooth metal panels (flat and curved)

Not compatible with: rough, textured, or porous surfaces; surfaces with radius tighter than 4" (102 mm); surfaces contaminated with oil, wax, or debris; applications requiring permanent load-bearing attachment.

Technical Specifications

Safety Data Summary

• Vacuum loss can result in sudden equipment drop or detachment — monitor the red-line indicator during use
• Load capacity is application-dependent — use the WPG Mounting Cup Capacity Calculator to determine safe working load for your specific application and surface
• Do not use on rough, textured, or porous surfaces
• Do not use on surfaces with radius tighter than 4" (102 mm)
• Do not use for permanent load-bearing applications — this is a temporary mounting solution
• Ensure RAM® arms and accessories are rated for the intended load before attaching to the 1" ball
• Damaged or contaminated pads must be replaced before use
• Operating below 0°F (-18°C) may degrade rubber pad performance

Frequently Asked Questions

Q: What is the difference between the TL3PB1, LJ45PB1, and TL6PB1?
A: All three use a 1" RAM®-compatible ball and share the same 0°F temperature rating and Pack of 4 configuration. The key differences are pad size and minimum curved surface radius: TL3PB1 — 3" TL3 pad, 4" minimum radius (tightest curves); LJ45PB1 — 4-1/2" LJ45 pad, 12" minimum radius; TL6PB1 — 6" TL6 pad, 12" minimum radius. Choose the TL3PB1 for tight-radius curved surfaces (4–12" radius) or very small contact areas; choose the LJ45PB1 or TL6PB1 for flat surfaces or curves with 12" or greater radius where a larger pad contact area is available. TL3, LJ45, and TL6 replacement pads are not interchangeable.

Q: Is the TL3PB1 compatible with all RAM® Mounts products?
A: The TL3PB1’s 1" ball is the standard RAM® ball size used across the RAM® Mounts product line and is compatible with RAM® ball-and-socket arms, cradles, and accessories designed for the 1" ball standard. Verify compatibility with your specific RAM® accessory before ordering. RAM® accessories are sold separately and are not included.

Q: How do I determine the load capacity for my application?
A: Load capacity for mounting cups varies by application, surface conditions, and orientation. Use the Wood's Powr-Grip Mounting Cup Capacity Calculator to determine the safe working load for your specific setup.

Q: Is this product made to order?
A: Yes. This product is made to order and all sales are final. Please confirm your surface type, curvature radius, and RAM® accessory compatibility before placing your order.