XKY Framing · Yiwu Xinkuangyuan Machinery Co., Ltd.
FAQ & Knowledge Base
Technical product reference, troubleshooting guides, and service information for professional frame manufacturers worldwide.
General FAQ
About XKY Framing
What is XKY Framing and where are you located?
XKY Framing is the brand name of Yiwu Xinkuangyuan Machinery Co., Ltd., a manufacturer of professional framing machinery based in 77 Gexian Road, Yiwu, Zhejiang Province, China. Operating from the world's largest small-goods manufacturing hub, XKY specialises in industrial underpinners, automated cutting saws, and related framing equipment for professional framers and OEM factories worldwide. Website: www.xkyframing.com · Tel: +86 18758801620.
What product categories does XKY offer?
XKY's product range covers four main categories:
- Auto Underpinner — Robotic quad-corner systems (NN300) for mass production, up to 1,000+ joined frames/hour.
- Frame Underpinner — Manual to CNC pneumatic underpinners (NN400, NN500, NN600, NN700) for workshop and mid-volume production.
- Auto Cutting — Industrial stack cutting saws (NC500, NC600) with automated feed/discharge for high-volume factories.
- Frame Cutting — Precision miter saws (CT300 dust-free, CT400 pneumatic aluminium) for custom framers and galleries.
Are XKY machines compatible with standard industry consumables?
Yes. All XKY machines use an Open Architecture design compatible with standard V-nails available on the market (Uni-type wedge standard). The machines use ISO standard pneumatic fittings, meaning O-rings and fittings can be sourced locally. However, for best performance XKY recommends using XKY-branded V-nails: mixing brands with different glue formulations can cause distributor block jamming.
What power supply do XKY machines require?
Most XKY underpinners (NN400–NN700) operate on 115/220 Volt, 50/60 Hz. The NC500 industrial stack saw requires 380V / 50Hz / 3-Phase. The NC600 is equipped with dual 9.86 kW high-torque motors. Always confirm local voltage and phase requirements before ordering, and use an appropriate phase converter if running 3-phase motors on single-phase supply.
Ordering & Delivery
How do I order spare parts or wear parts?
All genuine XKY components and wear parts are available through the official online store at xkyframing.com. XKY maintains a large inventory at the Yiwu warehouse and ships critical parts internationally via DHL, FedEx, or UPS. XKY strongly recommends maintaining an on-site inventory of Key Spare Kits to avoid production interruptions during peak seasons.
Can XKY machines be customised or built to specification?
Yes. XKY offers custom-design engineering for specific production workflows. The NN300 robotic system, for example, can be integrated with auto stackers and conveyor systems. The NC600 stack cutter supports optional Horizontal Feeder configurations. Contact the XKY sales team via WhatsApp (+86 18758801620) or email to discuss bespoke requirements.
Frame Underpinner Product Guide
What is an Underpinner? An underpinner (also called a V-nailer) joins two mitered frame pieces (45° angles) from the bottom using steel V-nails driven by pneumatic pressure. Unlike manual tools, pneumatic underpinners deliver consistent force into Hardwood, MDF, and Polystyrene (PS) profiles without splitting the wood, creating a tightly bonded, invisible joint from the back of the frame.
Product Lineup — At a Glance
NN300
AutoFully automatic quad-corner robotic underpinner. Joins all 4 corners simultaneously for mass production environments. Ideal for frame, mirror, and cabinet door production.
Output1,000+/hr
Cycle2–3 sec
Min Size6×8 cm
Max Size60×80 cm
NN400
PneumaticActive-Clamping Pneumatic Underpinner. Foundation machine for professional framing workshops. Clamp → Lock → Fire sequence ensures zero movement during assembly.
Width6–105 mm
Height6–80 mm
OutputUp to 300/hr
V-Nail Cap220 nails
NN500
CNCTouchscreen CNC Underpinner with Plate Clamping System. Distributes pressure evenly across wide profiles — the only choice for ultra-wide mirror frames and complex canvas floaters.
Max Width150 mm
Height6–80 mm
ClampingPlate Type
InterfaceTouchscreen
NN600
PLCPLC Touchscreen Underpinner with programmable nail positions. Store up to 100+ frame recipes for one-touch recall. Reduces setup time when switching between frame styles.
Memory100+ recipes
NailingMulti-pos.
Width6–105 mm
V-Nail Cap220 nails
NN700
FlagshipIntelligent Heavy-Duty Underpinner — XKY's most advanced model. Combines Plate Clamping stability with CNC precision. Up to 500+ profile memory. Nailing depth accuracy: ±0.1 mm.
Max Width150 mm
Memory500+ recipes
Depth Acc.±0.1 mm
ClampingRetract. Plate
Technical Specifications — Full Comparison
| Specification | NN400 | NN500 | NN600 | NN700 | NN300 (Auto) |
|---|---|---|---|---|---|
| Moulding Width (min–max) | 6–105 mm | 6–150 mm | 6–105 mm | 6–150 mm | 60–800 mm frame |
| Moulding Height (min–max) | 6–80 mm | 6–80 mm | 6–80 mm | 6–80 mm | — |
| Max Stroke (V-nail spacing) | 145 mm | 145 mm | 145 mm | 145 mm | — |
| V-Nail Channel Capacity | 220 | 220 | 220 | 220 | 600 per station |
| V-Nail Sizes Supported | 3–15 mm | 3–15 mm | 3–15 mm | 3–15 mm | All standard |
| Frames Joined / Hour | Up to 300 | Up to 300 | Up to 300 | Up to 300 | 1,000+ |
| Clamping System | Rod Clamp | Plate Clamp | Rod Clamp | Retractable Plate | 4× Pneumatic |
| Control Interface | PLC Display | Touchscreen | PLC Touchscreen | CNC Touchscreen | Icon Touchscreen |
| Profile Memory Storage | 5,000 profiles | 5,000 profiles | 100+ recipes | 500+ recipes | — |
| Power Supply | 115/220V 50/60Hz | 115/220V 50/60Hz | 115/220V 50/60Hz | 115/220V 50/60Hz | 380V 50Hz 3-Ph |
| Air Pressure | 4Nl @ 5 Bar | 4Nl @ 5 Bar | 4Nl @ 5 Bar | 4Nl @ 5 Bar | Independent per station |
| Machine Dimensions (L×W×H) | 736×800×1320 mm | 736×800×1320 mm | 736×800×1320 mm | 736×800×1320 mm | 3300×1460×1760 mm |
| Machine Weight | 150 kg | 150 kg | 150 kg | 150 kg | — |
| Corner Angle | 45° and 90° | 45° and 90° | 45° and 90° | 45° and 90° | 45° and 90° |
Underpinner FAQ
Which underpinner model is right for my production volume?
- Low Volume Custom framers, galleries, <100 frames/day → NN400 (entry-level pneumatic, simple PLC display)
- Wide Profiles Mirror frames, floaters, mouldings >105 mm → NN500 or NN700 (Plate Clamping System)
- Mid Volume Mixed frame styles, 100–500 frames/day → NN600 (100+ recipe memory reduces setup time)
- High Volume Factory production >500 frames/day → NN700 (500+ recipes, ±0.1 mm accuracy)
- Mass Production 1,000+ frames/hour, robotic line → NN300 (simultaneous 4-corner joining, conveyor integration)
What is the difference between Rod Clamping and Plate Clamping?
Rod Clamping (NN400, NN600) uses a single vertical rod to hold the frame against the work table. It is effective for standard-width profiles up to ~105 mm. However, on very wide or flat profiles, a single rod creates an uneven pressure point that can cause the moulding to tip or tilt during nailing.
Plate Clamping (NN500, NN700) uses a wide metal plate that descends to cover a larger surface area of the frame joint. The distributed pressure eliminates tipping, sliding, or tilting, making it the correct choice for ultra-wide mirror frames (up to 150 mm), complex canvas floaters, and any wide flat profile.
Plate Clamping (NN500, NN700) uses a wide metal plate that descends to cover a larger surface area of the frame joint. The distributed pressure eliminates tipping, sliding, or tilting, making it the correct choice for ultra-wide mirror frames (up to 150 mm), complex canvas floaters, and any wide flat profile.
What V-nail sizes are compatible with XKY underpinners?
All XKY underpinners (NN400–NN700) accept V-nails in sizes 3, 5, 7, 10, 12, and 15 mm for Softwood (SW), Hardwood (HW), and High-Density Reinforced (HDR) materials. The V-nail channel holds 220 nails. The NN300 auto system holds 600 nails per station (4 stations total).
How does the Dual-Stage Pedal on the NN400 work?
The NN400's dual-stage foot pedal allows the operator to perform two actions sequentially:
- Stage 1 — Clamp: A gentle press activates the clamping cylinders only. The frame is held in position, allowing the operator to visually verify alignment before committing to fire.
- Stage 2 — Fire: A full press drives the V-nail. If the position looks incorrect at Stage 1, the operator simply releases the pedal — no nail is wasted and no material is damaged.
Cutting Saw Product Guide
CT300
Dust-FreeDust-Free Precision Miter Saw. Captures over 90% of sawdust at source. Solid cast-iron base, Fixed-Blade structure. Ideal for custom framers and galleries demanding a clean workspace.
Max Width160 mm
Max Height100 mm
Motor2.2 kW
Blade10"–12"
CT400
PneumaticPneumatic Aluminium Miter Saw. Fixed-Table / Moving-Blade structure for vibration-free cutting of aluminium alloy and high-density hardwoods. Auto-pneumatic clamping to ±0.05 mm tolerance.
Max Width160 mm
Tolerance±0.05 mm
Air Pressure87–116 PSI
Blade12"–14"
NC500
Stack SawFully Automatic Stack Cutting Saw with Profile-Specific Mold System. Secures irregular or deeply sculpted mouldings for chip-free batch processing. Touchscreen control with manual, semi-auto, and full-auto modes.
Stack Width21½"
Cut Height1⅞"
MotorDual 4 HP
RPM2500–3800
NC600
IndustrialIndustrial High-Capacity Stack Saw. 100 mm wide processing range, Three-Cut Mode (Full Cut / Mirror Cut / Anti-Chip), fully automated feed and discharge. Up to 500% efficiency gain over manual saws.
Stack Width100 mm
Efficiency+300–500%
MotorDual 9.86kW
Blade Ø300/350 mm
Cutting Saw Comparison Table
| Specification | CT300 | CT400 | NC500 | NC600 |
|---|---|---|---|---|
| Primary Application | Custom framers / galleries | Aluminium & hardwood | Complex profile batch | High-volume laminated MDF |
| Max Cutting Width | 160 mm (6¼") | 160 mm (6¼") | 546 mm (21½") stack | 100 mm per profile |
| Max Cutting Height | 100 mm (4") | 100 mm (4") | 48 mm (1⅞") | 48 mm |
| Cutting Angles | 45°, 60°, 90°, 67.5° | 45°, 60°, 90°, 67.5° | 45° (Bi-directional) | 45° (Three-Cut Mode) |
| Motor Power | 2.2 kW (3 HP) | 2.2 kW (3 HP) | Dual 4 HP (3 kW) | Dual 9.86 kW |
| Spindle Speed | 2800 RPM | 2800 RPM | 2500–3800 RPM | Variable |
| Blade Size | 254–305 mm (10"–12") | 305–355 mm (12"–14") | Dual spindle | 300 mm / 350 mm |
| Clamping | Manual | Auto-Pneumatic | Profile-Specific Mold | Automated Feed/Discharge |
| Dust Collection | Integrated Cyclonic (90%+) | Integrated Cyclonic | External recommended | External recommended |
| Cutting Tolerance | Standard | ±0.05 mm | Chip-free | Zero-waste mirror cut |
| Air Pressure | Not required | 87–116 PSI | 87–116 PSI | — |
| Power Supply | 220V 50Hz | 220V 50Hz | 380V / 3-Phase | 380V / 3-Phase |
| Machine Weight | ~200 kg | ~250 kg | 1,050 kg (2,315 lbs) | — |
Cutting Saw FAQ
What is the NC600 Three-Cut Mode and why does it matter?
The NC600's Three-Cut Mode uses an intelligent sequence to eliminate chip-out on delicate surfaces:
- Mode 01 — Full Cut: Standard single-pass cutting for plain profiles.
- Mode 02 — Three-Cut & Final Separation: Makes two shallow scoring cuts before the main full cut, relieving surface stress. This is the Anti-Chip mode, ideal for laminated MDF and gesso-wrapped frames where a single pass would shatter the surface coating.
- Mode 03 — Mirror-Cut (Zero-Waste): Alternates blade direction between cuts. Left-to-right on one piece, right-to-left on the next. This positions the miter cuts such that offcuts from one piece become the starting segment of the next, eliminating material waste almost entirely.
Why does the CT400 use a "Fixed-Table, Moving-Blade" design?
Traditional chop saws move the workpiece or the entire saw head in an arc, which introduces vibration and micro-movement at the moment of cut — especially problematic for aluminium alloy and dense hardwoods. The CT400's Fixed-Table design locks the workpiece with an auto-pneumatic clamp and moves only the blade carriage forward on precision rails. The result is rock-solid stability and a burr-free finish with a cutting tolerance of ±0.05 mm.
What is the NC500's Profile-Specific Mold System?
Unlike traditional flat-plate clamps that cannot securely grip irregular or deeply sculpted moulding profiles (e.g. ornate picture frame rails with curved surfaces), the NC500 uses interchangeable custom-fitted molds. Each mold is contoured to match the exact cross-section of a specific moulding profile. This eliminates vibration and deformation during the cut, allowing for stable stack cutting of complex profiles that would be impossible on a standard flat-clamp machine. Molds are interchangeable, allowing rapid adaptation to different frame styles.
V-Nail Fastening System
XKY V-nail fasteners meet EN 10132 cold-rolled narrow steel strip standards. Available in Standard (0.30 mm thickness, 200 nails/strip) and Reinforced (0.38 mm thickness, 160 nails/strip) variants. Bright finish / specialised coating. Silicone strip collation. Compatible with all XKY machines and most standard underpinner brands.
Material Type Selection
PS
N46–N51 (PS) Grind
For synthetic and foam materials: PS Foam Moulding, Plastic Frames, Synthetic Composites. Softest nail — drives into foam without crushing.
For synthetic and foam materials: PS Foam Moulding, Plastic Frames, Synthetic Composites. Softest nail — drives into foam without crushing.
Sizes 3–15 mm
GP
N40–N45 (GP) Grind
General purpose for Pine, Cedar, Soft MDF (no stacking), common composite mouldings. Industry workhorse.
General purpose for Pine, Cedar, Soft MDF (no stacking), common composite mouldings. Industry workhorse.
Sizes 3–15 mm
HW
Hardwood (HW) Grind
For Oak, Ash, Walnut, Gesso, Hard MDF. Stacking supported. Hardened tip for high-density materials without bending.
For Oak, Ash, Walnut, Gesso, Hard MDF. Stacking supported. Hardened tip for high-density materials without bending.
Sizes 7–15 mm
Nail Type Specifications
| Type | Width | Thickness | Nails/Strip |
|---|---|---|---|
| Standard | 11 mm | 0.30 mm | 200 |
| Reinforced | 11 mm | 0.38 mm | 160 |
Stacking Strategy for Hardwood: For high-profile mouldings (>25 mm height), use a 7 mm + 7 mm stacking sequence (two nails at the same location) rather than a single 15 mm nail. Stacking distributes clamping force more evenly and reduces the risk of splitting.
Hardwood V-Nail Size Reference
| Size | Part Number | Nails / Box | Standard Box | Bulk Case (Boxes/Case) | Recommended Use |
|---|---|---|---|---|---|
| 7 mm | 1007-HW | 4,400 | Standard | 18 boxes | Light profiles, softwood, stacking base |
| 8 mm | 1008-HW | 4,400 | Standard | 17 boxes | Medium profiles, soft-to-medium density |
| 10 mm | 1010-HW | 4,400 | Standard | 14 boxes | General hardwood, gesso-coated |
| 12 mm | 1012-HW | 4,400 | Standard | 12 boxes | Thick hardwood, dense MDF |
| 15 mm | 1015-HW | 4,400 | Standard | 10 boxes | Maximum penetration, extra-thick profiles |
⚠ Critical Warning — Do Not Mix Nail Brands: Different V-nail brands use different glue formulations with different melting points. Mixing brands in the same distributor block causes the glues to combine and harden, leading to distributor block jamming. Always complete a full cartridge of one brand before loading another, and ideally commit to a single brand for each machine.
V-Nail FAQ
What is the purpose of V-nail glue coating?
V-nails are coated with a thermoplastic glue (heat-activated adhesive). When the nail is driven by the pneumatic piston, friction heats the glue coating which bonds to the wood fibres. This is why V-nails function as both a mechanical fastener (holding the joint together via the wedge shape) and an adhesive (the glue creates a secondary structural bond as it cools). This dual action is what makes underpinning superior to staples or screws for miter joints.
How many V-nails per corner should I use?
This depends on moulding profile width:
- Narrow (up to 30 mm): 1 V-nail centred in the joint
- Medium (30–60 mm): 2 V-nails, positioned symmetrically
- Wide (60–105 mm): 3 V-nails, including one near each edge
- Extra-wide (105–150 mm, NN500/NN700): 3–4 V-nails with stacking strategy
Troubleshooting Guide
Underpinner — Diagnostic Sequence
-
1Listen — Hissing sound present? Air leak detected. Check foot pedal valve O-rings first (hissing worsens when pedal is pressed), then main cylinder seals (constant hissing), then quick-fit connectors (apply soapy water to find bubbles).
-
2Watch the cylinder — Does it actuate? If no movement: check air pressure (set to 5–7 bar), verify foot pedal signal, check solenoid valve. If actuates but weakly: internal cylinder seal wear, supply air volume insufficient.
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3Does a V-nail eject? If no nail: check pusher mechanism (constant-force spring broken or disengaged), check nail size matches machine setting, inspect distributor block for complete blockage.
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4Is the nail fully driven? Nail protruding (Proud Nail): increase pressure (hardwood needs 6–7 bar), check driver blade for wear or burr at tip (replace if >0.5 mm deformation).
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5Inspect the corner joint. Top gap (face side open)? Increase vertical clamping pressure. Reposition top pad closer to Rebate groove. Check saw cut angle (<45° causes top gap).
-
6Bottom gap (back of frame open)? Saw angle >45° is primary cause. Check fence squareness with machinist square. Ensure no sawdust debris under moulding.
Cutting Saw — Diagnostic Sequence
-
1Blade runout / wobble? Check flange (washer) flatness with dial indicator — runout >0.05 mm requires machined replacement flanges. Check arbor bearings for play. Verify blade mounting is clean and torqued correctly.
-
2Chip-out or tear-out on cut face? Primary cause: no zero-clearance support at cut line. Create a Zero Clearance Insert. Verify blade tooth geometry — use Hi-ATB negative hook angle (−5° to −7°) for clean cross-cuts. Check blade sharpness.
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3Cut angle inaccurate? Calibrate detent (angle lock) with precision machinist square. Verify fence squareness. Clean sawdust from fence contact surfaces. Use digital angle meter to verify to 0.1° accuracy.
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4Chatter marks on aluminium? (NC600/CT400): Check hydraulic dashpot oil level. Bleed air from hydraulic system. Adjust damping valve for consistent feed rate. Verify pneumatic clamp pressure is sufficient before blade contacts workpiece.
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5Excessive dust escaping? Upgrade from 2.5" to 4" (100 mm) dust extraction port. Add rear backstop / downdraft capture. Use dual-point extraction: one at blade guard, one at rear.
Common Issues — Quick Reference
| Symptom | Likely Cause | First Action | Severity |
|---|---|---|---|
| V-nail jams in distributor block | Glue residue build-up (60%+ of cases) | Deep-clean distributor with IPA solvent. Inspect driver blade tip for burr. | Routine |
| Machine fires but no nail ejects | Constant-force pusher spring broken or disengaged | Inspect pusher mechanism. Blow clear with compressed air. Replace spring if broken. | Moderate |
| Nail bends halfway in | Driver blade misaligned or V-nail block clogged | Verify driver blade strikes nail dead-centre. Clean V-nail block. | Moderate |
| Top of corner frame open | Insufficient vertical clamping pressure; pad position wrong | Business Card Test — adjust top cylinder pressure. Move pad closer to rebate. | Routine |
| Bottom of corner frame open | Saw cut angle >45° | Recalibrate miter saw detent. Check fence angle with machinist square. | Moderate |
| Corner surface step/misalignment | Moulding warp/twist or thickness variation >0.2 mm | Sort moulding by batch. Use triangular felt or silicone pad on clamp head. | Moderate |
| Persistent hissing from machine body | Main cylinder piston seal worn (Blow-by) | Air Leak Test: charge to working pressure, shut off compressor, observe pressure drop over 15 min. >10% drop = replace piston seal kit. | Urgent |
| Weak drive force on hardwood | Pressure set too low; cylinder internal leak | Raise to 6–7 bar for hardwood. Perform air leak test. Check FRL lubricator oil level. | Moderate |
| Chip-out on laminated MDF | Lack of zero-clearance support; wrong blade tooth geometry | Create Zero Clearance Insert (<0.5 mm gap). Switch to Hi-ATB −5° to −7° hook angle blade. | Routine |
| Compressor starts frequently during operation | Air leak or tank volume too small (<50L) | Perform soap-water leak test on all fittings. Upgrade to 50L+ compressor tank. | Urgent |
The Business Card Test (Vertical Clamp Pressure Calibration): Place a standard business card between the moulding surface and the top clamp pad. Activate the clamp. You should be able to pull the card out with moderate resistance — it should feel stiff but not tear. If the card slides out easily, the clamping pressure is too low. If you cannot move it at all, reduce pressure to avoid surface damage on soft profiles.
Preventive Maintenance Schedule
| Frequency | Task | Component | Notes |
|---|---|---|---|
| Daily | Drain FRL water trap | Filter / Water Separator | 90% of pneumatic failures trace to moisture. Check oil level in lubricator. |
| Daily | 2–3 drops pneumatic oil into air inlet | Air supply line | Only if no auto-lubricator fitted. ISO VG 32 or SAE 10W oil. Never WD-40. |
| Daily | Clean fence and table debris | Work surfaces | Debris under moulding causes angle deviation. Brush or compressed air. |
| Weekly | Blow clear pusher mechanism | V-nail cartridge area | Prevents pusher spring from being impeded by glue/dust accumulation. |
| Per 5,000 nails | Deep-clean distributor block | Distributor / Driver Blade area | Disassemble. Clean with IPA. Inspect rubber seals for hardening. Check driver blade tip. |
| Monthly | Air leak test | Full pneumatic circuit | Pressurize, shut off compressor, observe 15 min. >5% drop = inspect O-rings. |
| Monthly | Lubricate guide rails | Sliding mechanical parts | White Lithium Grease (metal-to-metal contact). Never WD-40 on O-rings. |
| Quarterly | Full accuracy calibration | Saw angles + underpinner clamp pressure | Verify 45° and 90° with machinist square. Test clamp pressure with business card. |
| Quarterly | Blade inspection and cleaning | Saw blades | Check carbide tips for chipping. Soak in alkaline blade cleaner 10–15 min. Do not use wire brush. |
Service & Support
Remote Diagnostics
1-on-1 live video consultation via WhatsApp, WeChat, or Microsoft Teams. Most mechanical adjustments resolved remotely without travel costs.
Installation & Commissioning
On-site installation for NN400 Automated Underpinners, CNC Double Miter Saws, and Precision Cut Measurement Systems. Full operator safety certification included.
Video Training Library
Full-spectrum step-by-step HD tutorials: from initial unboxing to complex troubleshooting. Covers all models including the NN400 Underpinner and NC600 Stack Cutter.
Preventive Maintenance
Fixed-fee annual contracts or hourly-rate billing. Designed to identify wear patterns before they cause production failures. Quoted based on machinery scope and quantity.
24H Emergency Support
Immediate response via phone or digital media for critical issues. Express parts dispatch from Yiwu warehouse via DHL / FedEx / UPS for critical components.
Spare Parts & Wear Kits
Genuine XKY components available at xkyframing.com. XKY recommends maintaining an on-site Key Spare Kit inventory to eliminate downtime during peak seasons.
Service FAQ
What is the recommended air supply setup for an XKY machine?
A complete air supply setup should include:
- Compressor Tank: Minimum 50L capacity. Smaller tanks cause the compressor to cycle too frequently and create pressure drops during rapid firing.
- FRL Unit (Filter-Regulator-Lubricator): A three-unit combination installed on the air supply line. The Filter removes water and particulates. The Regulator sets working pressure. The Lubricator injects micro-drops of oil into the airstream. This single upgrade eliminates approximately 90% of pneumatic failures.
- Refrigerant Dryer (recommended for humid climates): Removes moisture from compressed air before it reaches the machine. Moisture causes internal cylinder rust and O-ring swelling.
- Air Line: Minimum 6 mm internal diameter. Avoid sharp bends. If running multiple machines, use a manifold with dedicated regulated drops for each machine.
Can I source replacement O-rings and pneumatic fittings locally?
Yes. XKY uses ISO Standard Pneumatic Fittings throughout. O-rings are standard NBR (nitrile rubber) sizes available from any industrial supply store (Parker, SMC, Festo, etc.). This is a deliberate design choice — unlike some European brands with proprietary thread forms, XKY machines allow local sourcing of sealing components at a fraction of OEM prices. For the foot pedal valve, the inner spool O-rings are typically NBR 10×2 mm or 12×2 mm; verify with calipers before purchasing.
What lubricants should I use — and what should I never use?
✔ Use these:
- Pneumatic Tool Oil (ISO VG 32 or SAE 10W, no additives) — for air supply line / FRL lubricator. 2–3 drops per day into air inlet if no auto-lubricator.
- White Lithium Grease — for metal-to-metal sliding parts (guide rails, table pivot points, V-nail channel slides).
- Dry PTFE Spray (Teflon Dry Lubricant) — for V-nail channels and distributor block sliding surfaces. Dry film does not attract sawdust.
- WD-40 — it is a water displacer, not a lubricant. It degrades NBR O-rings over time and leaves an oily residue that attracts sawdust, forming abrasive sludge in pneumatic passages.
- Engine oil / gear oil — too viscous, gums up channels.
- Silicone oil (wet/spray) on pneumatic seals — can cause seal swelling.
How do I contact XKY for technical support or to place an order?
XKY Framing technical support and sales are available through the following channels:
- Website: www.xkyframing.com
- Phone / WhatsApp / WeChat: +86 18758801620
- Address: 77 Gexian Road, Yiwu, Zhejiang Province 322000, China
- Emergency (24H): Phone or WhatsApp — critical issues receive same-session video diagnosis.
Need Technical Help?
XKY engineers are available 24 hours for emergency support. Contact us via WhatsApp, WeChat, or phone for immediate remote diagnostics.
CC BY-SA 4.0
This knowledge base is published under the Creative Commons Attribution-ShareAlike 4.0 International License. You are free to share and adapt this material with attribution to XKY Framing / Yiwu Xinkuangyuan Machinery Co., Ltd.