FAMILY 04 · SIBLING COMPONENT
4.1 Plastic Motor Mounting Flanges
Structural front and rear motor mounting flanges engineered to replace heavy, expensive die-cast aluminum or CNC-machined steel plates.
Explore Motor Mounting Flanges →Home › Products › 04 Flanges, Bushings & Wire Protection › Wire Bushings & Grommets
Motor Wire Protection Bushings & Strain-Relief Rubber Grommets
Essential lead-wire exit protectors engineered to shield motor power and encoder cables from sharp stamped-metal housing edges, bending fatigue, and axial pull-out forces. Available in rigid mirror-smooth UL94 V-0 PA66 snap-in bushings as well as flexible, oil-and-heat-resistant EPDM, NBR, Silicone, and TPE elastomeric grommets.
✓ 100% Burr-Free Mirror-Smooth Inner Bore
✓ High Flex-Fatigue & Tear Resistance
✓ Oil, Ozone & 200°C+ Heat Resistant
PRECISION TOLERANCE
Drawing-Specific Dimensions
CORE POLYMERS
PA66, PPS, TPE, Silicone, EPDM
SAFETY & COMPLIANCE
UL94 V-0 Grades Available · RoHS/REACH
TOOLING & LEAD TIME
15–25 Days T1 · 7–10 Days Insert Swap
WHY ENGINEERS CHOOSE RUNHENG WIRE BUSHINGS & GROMMETS
Complete Lead-Wire Protection Against Cut-Through, Pull-Out & Oil Aging
01. Zero-Flash Inner Wire Passages
Whether molded in rigid PA66 or flexible elastomers, our Sodick Mirror EDM core pins ensure the inner cable channel is 100% smooth and flash-free—preventing wire insulation chafing during vibration.
02. High Flex-Life & Tear Strength
Flexible grommets with spiral strain-relief tails withstand tens of thousands of 90° cable flexing cycles without neck tearing, hardening, or cracking.
03. Oil, Coolant & High-Temp Endurance
Formulated in UL94 V-0 TPE, Silicone, FKM (Viton), EPDM, and NBR to resist motor bearing grease, industrial cutting fluids, UV ozone, and up to 200°C+ heat.
04. Extensive Standard Tooling Library
Dozens of standard round, oval, D-slot, and split-housing motor exit grommets in stock for free sampling—eliminating new tooling costs for mainstream motor frames.
TECHNICAL SPECIFICATIONS
Wire Bushing & Grommet Engineering Parameters
Available Materials
Rigid: UL94 V-0 PA66, PPS, PC | Flexible: TPE, TPV, Silicone, EPDM, NBR, FKM Rubber
Hardness Range (Elastomers)
Shore A 40 to Shore A 85 (Customizable for soft sealing or firm retention)
Flame Retardancy & Safety
UL94 V-0 Certified Grades Available; High Dielectric Insulation
Thermal Operating Range
-50°C to +200°C+ (Silicone / FKM / High-Temp PA66)
Inner Bore Edge Standard
100% Burr-Free & Flash-Free Radiused Entry/Exit Lips
Housing Mounting Styles
Snap-In Groove, Slide-In U-Slot (Split End Bell), Press-Fit & Overmolded-on-Cable
Quality & Defect Control
≤ 50 PPM Defect Rate; 100% Flash Inspection, Shore Hardness & Tensile Tear Testing
Certifications
ISO 9001:2015, ISO 14001:2015, UL Process Certified, RoHS, REACH & PAH-Free
STANDARD & CUSTOM CONFIGURATIONS
Supported Wire Bushing & Grommet Styles
Slide-In U-Slot Motor Housing Grommets
Flanged square and U-shaped rubber/TPE grommets that slide into stamped metal or cast motor end-bell notches.
Inquire U-Slot Grommets → Multi-Hole & Sealed Cable Exit Boots
Dust-and-water-tight elastomeric grommets with individual phase-wire holes and flex-relief tails.
Request Custom Quote → Rigid Snap-In Nylon Strain-Relief Bushings
UL94 V-0 PA66 snap-locking bushings that anchor power cords firmly against axial pull-out tests.
Discuss Standard Stock →HOW WE GUARANTEE CONSISTENCY
How We Guarantee Tear Resistance & Flash-Free Channels
01. Anti-Aging Virgin Elastomer & PA66 Selection
100% virgin RoHS/REACH compliant compounds ensure long-term elasticity without surface blooming or brittle aging.
02. Cryogenic Deflashing & Mirror Core Tooling
Precision parting-line shutoffs and cryogenic deflashing guarantee clean external grooves and smooth inner bores.
03. Durometer, Tear-Force & Housing-Fit QC
Every batch is tested for Shore A hardness, elongation at break, and snap-in retention in master motor end bells.
04 / FLANGES, BUSHINGS & WIRE PROTECTION FAMILY
Explore Other Structural & Auxiliary Motor Components
FAMILY 04 · SIBLING COMPONENT
4.2 Self-Lubricating Shaft Bushings & Phenolic Parts
High-concentricity rotor shaft sleeves, axial thrust washers, bearing isolating bushings, and high-heat thermoset Phenolic (Bakelite) coil supports.
Explore Shaft Bushings & Phenolic Parts →FAMILY 04 · SIBLING COMPONENT
4.4 Waterproof Gaskets & Insulating Films
Complete your motor assembly with one-stop auxiliary sealing and phase-insulation components.
Explore Gaskets & Insulating Films →DIRECT ENGINEERING SUPPORT
Need Free Standard Grommet Samples or Custom Wire Bushings?
Upload or email your 2D/3D component drawing (STEP, IGES, DWG, PDF) or share your component geometry. Free standard stock samples are available (freight collect), and custom DFM reviews are returned within 24 business hours.
✓ Free Standard Stock Samples (Freight Collect)
✓ 24-Hour Engineering DFM & Quote Response
✓ 100% NDA Confidentiality Protection
Send Your 2D/3D Drawing or Sample Request
Fill out the project specs below or attach your CAD files. Our engineering team responds within 24 business hours.
