What does XKY Framing do?

XKY Framing (Yiwu Xinkuangyuan Machinery Co., Ltd.) designs and manufactures industrial framing machinery for picture frame, mirror, and cabinet door producers worldwide. Our product range includes fully automatic quad-corner underpinners (NN300), pneumatic and CNC underpinners (NN400–NN700), industrial stack cutting saws (NC500, NC600), dust-free miter saws (CT300), and pneumatic aluminium saws (CT400), plus a full range of V-nail fasteners.

Where is XKY Framing located?

XKY Framing is based at 77 Gexian Road, Yiwu City, Zhejiang Province, China — in the heart of the world's manufacturing hub. We supply framing machinery to customers globally.

What machines does XKY Framing manufacture?

XKY manufactures four main product categories: (1) Auto Underpinners — including the NN300 fully automatic quad-corner system (1,000+ frames/hour) and the NN400/NN500/NN600/NN700 pneumatic and CNC underpinners for joining 45° and 90° miter joints using V-nails. (2) Auto Cutting — including the NC600 industrial high-capacity stack saw and NC500 fully automatic stack cutting saw for double-miter cutting of MDF and wrapped profiles. (3) Frame Cutting — including the CT300 dust-free precision miter saw and CT400 pneumatic aluminium saw. (4) V-Nail Fasteners — compatible with all standard underpinner brands, available in soft, general-purpose, and hardwood grades from 7mm to 15mm.

How fast is the XKY NN300 automatic underpinner?

The XKY NN300 (SL-NN300) Fully Automatic Quad-Corner Underpinner joins all four corners of a frame simultaneously with a cycle time of 2–3 seconds, achieving over 1,000 joined frames per hour — up to 400% faster than manual operation. It is ideal for high-volume picture frame, mirror, and cabinet door production.

What is the difference between the NC500 and NC600 cutting saws?

The NC500 is a fully automatic stack cutting saw with a proprietary mold-based clamping system, best for complex or irregular moulding profiles up to 21.5" wide. The NC600 Industrial High-Capacity Stack Saw adds a 100mm (4") wide cutting range, anti-chip Three-Cut Mode, and zero-waste mirror-cut mode, boosting efficiency by 300–500% over manual saws. The NC600 is the flagship choice for large-scale laminated MDF and wrapped gesso frame factories.

Does XKY offer after-sales support and installation?

Yes. XKY provides a comprehensive service package: remote technical diagnostics via WhatsApp, WeChat, or Teams; full HD video tutorial libraries; on-site installation and operator training; a preventative maintenance program; 24-hour urgent support; and express spare parts dispatch (DHL/FedEx/UPS) from our Yiwu warehouse. Genuine spare parts are also available through xkyframing.com.

Are XKY V-nails compatible with other brands of underpinners?

XKY V-nail fasteners are made to the standard EN 10132 specification and are fully compatible with all major brand underpinners on the market. They are available in standard (0.30mm) and reinforced (0.38mm) thickness, in PS foam/plastic, general-purpose softwood, and hardwood grades, from 7mm to 15mm length.

How do I contact XKY Framing for a quote?

You can contact XKY Framing by phone or WhatsApp at +86 18758801620, visit our website at xkyframing.com, or reach us through our social media channels on LinkedIn, Facebook, Instagram, X (Twitter), and Pinterest.

Rubber Pressing Block CNC Corner Nailing Machine L-Shape – 53x53x58mm red polyurethane

NN17-Rubber Pressing Block for CNC Corner Nailing Machine L-Shape 53mm

SKU: NN17

Key Specs

Shape: Outer Width
Outer Width: 53 mm x 53 mm
Diagonal Leg: 58 mm
Arm Width: ~7 mm
Material: Red Polyurethane
Application: CNC corner nailing machine

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MOQ: 100•Lead time: 7-10days•Custom packaging: Available

The Rubber Pressing Block for CNC Corner Nailing Machine (压块) is an L-shaped red polyurethane block that clamps the picture frame corner during nailing. Its polyurethane composition grips the moulding without scratching delicate finishes.

Specification	Value
Shape	L-shape
Outer Width	53 mm x 53 mm
Diagonal Leg	58 mm
Arm Width	~7 mm
Material	Red Polyurethane

What material is this pressing block made from?

The pressing block is made from red polyurethane rubber, which provides firm clamping force while remaining soft enough to prevent scratching or denting of gold leaf, lacquered, or delicate moulding surfaces.

What are the dimensions of this block?

The L-shape outer dimensions are 53mm x 53mm with a 58mm diagonal leg length and approximately 7mm arm cross-section width. It is designed for CNC corner nailing machines.

How is the pressing block attached to the machine?

The pressing block is mounted to the machine's clamping arm using the machine's existing hardware. The block's flat mating surfaces allow flush contact with the clamping arm face.

Rubber Pressing Block for CNC Corner Nailing Machine L-Shape – Scratch-Free Frame Clamping

The Rubber Pressing Block for CNC Corner Nailing Machine L-Shape is a precision-cut polyurethane block that forms the critical contact interface between the machine’s clamping arm and the picture frame moulding during the high-pressure nailing cycle.

Dimensions

The L-shaped block measures 53mm x 53mm across the outer dimensions, with a 58mm diagonal leg and approximately 7mm arm width. These dimensions are matched to the CNC corner nailing machine’s clamping arm geometry for a precise, rattle-free fit.

Material Benefits

Red polyurethane is harder than natural rubber, giving the Rubber Pressing Block for CNC Corner Nailing Machine L-Shape better dimensional stability under repeated clamping loads. However, it remains soft enough to conform slightly to the moulding profile, distributing clamping pressure evenly and eliminating point-load damage to the frame surface.

Application

This block is designed for CNC corner nailing machines (数控钉角机). It is not compatible with tabletop or 7/8-cylinder machine clamping arms, which use a different-sized block.

Replacement Schedule

Inspect the contact face of the pressing block monthly. Replace when you observe surface cracking, material hardening, or compression set that creates an uneven contact surface.