Self-Lubricating and Oil-Free Bearings Manufacturer

BKZ Industry manufactures self-lubricating bearings and oil-free bushings, including graphite plugged, composite, flanged, washer, plate, and wear-resistant sliding bearing solutions. With production experience since 2018, integrated R&D and production lines, and strict quality control, we provide standard and customized products for high-load, shock-load, oscillating motion, and harsh working environments.

Hot Self Lubricating Bearings from BKZ Industry

BKZ Industry offers graphite plugged bearings, PTFE and POM composite bearings, bimetal bearings, wrapped bronze bearings, and special self-lubricating bushings for reliable industrial sliding motion.

Graphite Plugged Bearing

BKZ Industry offers graphite plugged bearings made from high-strength brass or cast bronze alloys with embedded solid graphite for reliable self-lubrication. These bearings provide high load capacity, wear resistance, low friction, and low maintenance for dry, high-load, oscillating, and slow-speed applications. Available designs include cylindrical bushings, flanged bushings, shoulder bushings, thin-wall bushings, thrust washers, thrust flanged bushings, sliding plates, and custom components.

High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type

High-Strength Brass Graphite Plugged Oil-Free Bushings – Shoulder Type

Thin-Wall Graphite Plugged High-Strength Brass Bushings – Cylindrical/Shoulder Type

High-Strength Brass Graphite Plugged Bushings – Flanged Type

High-Strength Brass Graphite Plugged Thrust Flange Bushings

High-Strength Brass Graphite Plugged Thrust Washers

High-Strength Brass Graphite Bushings for Linear Bearing Replacement

Cast Bronze Graphite Plugged Bushings

PTFE Composite Bearings

PTFE Composite Bearings combine a metal backing with a low-friction PTFE sliding layer to deliver smooth, maintenance-free performance in compact spaces. BKZ Industry offers carbon steel backed, bronze backed, stainless steel backed, straight, washer, and special-material PTFE composite bushings for light to medium loads, oscillating motion, and applications requiring low wear, reliable dry-running performance, and space-saving design.

Carbon Steel Backed PTFE Composite Bushings

Bronze Backed PTFE Composite Bushings

Stainless Steel Backed PTFE Composite Bushings

Tin-Plated PTFE Composite Thrust Washers

Tin-Plated PTFE Composite Bushings – Cylindrical & Flanged Types

PTFE Composite Bushings with Special Materials

POM Composite Bearings

BKZ Industry POM Composite Bearings feature a steel or metal backing with a POM or modified polymer sliding layer for low-friction, low-maintenance operation. Designed for light to medium loads, oscillating or low-speed motion, and intermittent lubrication, they are ideal for edge-lubricated mechanisms, automation systems, and applications where occasional maintenance is required.

Boundary Lubricated POM Composite Bushings

Lead-Free POM Composite Bushings

POM Composite Bushings with Special Material

Bimetal Bearings

Bimetal Bearings feature a robust steel backing combined with a copper-alloy sliding layer, providing reliable self-lubrication. They deliver high load capacity, excellent wear resistance, and long service life. Available in cylindrical and flanged designs, these bearings are ideal for heavy-duty radial and axial loads in industrial machinery, engines, and hydraulic equipment.

Bimetal Self-Lubricating Bushings

Flanged Bimetal Bushings

Wrapped Bronze Bearings

Wrapped Bronze Bearings are precision-rolled bronze bushings with built-in lubrication grooves or holes, ensuring continuous self-lubrication for long service life. They deliver high wear resistance, outstanding load capacity, and low friction in demanding sliding applications. Available in solid, rolled, and flanged variants, these bearings are ideal for linear or rotary motion in industrial machinery, agricultural equipment, and heavy-duty moving joints.

Cylindrical Type Wrapped Bronze Bushings

Flanged Wrapped Bronze Bushings

Other Special Bushings

Other Special Bushings include self-lubricating spherical plain bearings, graphite bronze sliding blocks, mold guide bushings, steel sleeve assemblies, and linear aluminum housings with graphite bronze inserts. These components ensure continuous self-lubrication, low friction, high durability, and precise motion control, making them ideal for heavy-duty or high-precision industrial applications such as molding, automation, linear motion systems, and machinery guidance.

Self-Lubricating Spherical Plain Bearings

Graphite Bronze Sliding Blocks

Guide Pillar Bush – Shoulder Type

Linear Plain Bearings with Flange-Mount Housing -Graphite Plugged Bronze

Graphite Bronze Linear Guide Block

Self Lubricating Bearing Size Chart

This chart shows selected reference sizes for self-lubricating bearings and oil-free bushings. More sizes, materials, and custom designs are available. For accurate selection and quotation, please send your bearing type, dimensions, material, load condition, motion type, and application environment, or provide drawings and samples for custom production.

Product Name	Bore Diameter d (mm)	Bore Tolerance E7 (mm)	Outer Diameter D (mm)	Outer Diameter Tolerance r6 (mm)	Height Options L (mm)	Height Tolerance (mm)
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	4	+0.010 / +0.022	8	+0.006 / +0.015	8, 10, 12, 15	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	5	+0.010 / +0.022	9	+0.006 / +0.015	8, 10, 12, 15, 16, 20	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	6	+0.010 / +0.022	10	+0.006 / +0.015	6, 8, 9, 10, 12, 15, 16, 20, 25	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	8	+0.013 / +0.028	12	+0.007 / +0.018	8, 10, 12, 15, 16, 18, 20, 25, 30, 35	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	10	+0.013 / +0.028	14	+0.007 / +0.018	8, 10, 12, 15, 16, 18, 20, 25, 30, 35, 50	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	10	+0.013 / +0.028	16	+0.007 / +0.018	8, 10, 15, 18, 20, 22	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	12	+0.016 / +0.034	16	+0.007 / +0.018	10, 12, 15, 16, 20, 25, 30, 35	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	12	+0.016 / +0.034	18	+0.007 / +0.018	8, 10, 12, 15, 16, 18, 19, 20, 25, 30, 35, 40, 45, 50	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	13	+0.016 / +0.034	19	+0.008 / +0.021	10, 12, 15, 16, 20, 25, 30, 35, 40, 50	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	14	+0.016 / +0.034	20	+0.008 / +0.021	10, 12, 15, 18, 20, 25, 30, 35	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	14	+0.016 / +0.034	20	+0.008 / +0.021	10, 12, 15, 18, 20, 25, 30, 35	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	15	+0.016 / +0.034	20	+0.008 / +0.021	12, 15, 20	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	15	+0.016 / +0.034	21	+0.008 / +0.021	10, 12, 15, 16, 20, 25, 30, 35, 40, 50	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	16	+0.016 / +0.034	22	+0.008 / +0.021	10, 12, 15, 16, 18, 19, 20, 25, 30, 35, 40, 50, 60	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	16	+0.016 / +0.034	24	+0.008 / +0.021	10, 15, 20, 25, 30, 40, 50	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	16	+0.016 / +0.034	25	+0.008 / +0.021	15, 20, 25, 30, 35, 40, 50	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	17	+0.016 / +0.034	23	+0.008 / +0.021	15	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	18	+0.016 / +0.034	24	+0.008 / +0.021	10, 12, 15, 16, 18, 19, 20, 25, 30, 40, 45, 50	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	19	+0.020 / +0.041	26	+0.008 / +0.021	15, 20	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	20	+0.020 / +0.041	25	+0.008 / +0.021	15, 20, 30, 40	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	20	+0.020 / +0.041	26	+0.008 / +0.021	15, 20, 25, 30, 35, 40	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	20	+0.020 / +0.041	28	+0.008 / +0.021	10, 12, 15, 16, 20, 25, 30, 40, 45, 50, 60, 70	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	20	+0.020 / +0.041	30	+0.008 / +0.021	10, 12, 15, 16, 20, 25, 30, 35, 40, 45, 50, 60, 70	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	22	+0.020 / +0.041	28	+0.008 / +0.021	30, 40	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	22	+0.020 / +0.041	30	+0.008 / +0.021	20, 25, 30, 40, 50	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	22	+0.020 / +0.041	32	+0.009 / +0.025	12, 15, 20, 25, 30, 40	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	23	+0.020 / +0.041	26	+0.008 / +0.021	20, 25	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	25	+0.020 / +0.041	30	+0.008 / +0.021	15, 20, 25, 30, 40, 50	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	25	+0.020 / +0.041	32	+0.009 / +0.025	20, 25, 30, 35, 40, 45, 50, 60	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	25	+0.020 / +0.041	33	+0.009 / +0.025	10, 12, 15, 16, 20, 25, 30, 35, 40, 45, 50, 60, 70	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	25	+0.020 / +0.041	35	+0.009 / +0.025	12, 15, 16, 20, 25, 30, 35, 40, 45, 50, 60, 70, 80	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	28	+0.020 / +0.041	38	+0.009 / +0.025	20, 25, 30, 40	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	30	+0.020 / +0.041	36	+0.009 / +0.025	20, 25, 30, 35, 40	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	30	+0.020 / +0.041	38	+0.009 / +0.025	12, 15, 16, 20, 25, 30, 35, 40, 45, 50, 60, 70, 80	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	30	+0.020 / +0.041	40	+0.009 / +0.025	12, 15, 20, 25, 30, 35, 40, 45, 50, 60, 70, 80	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	30	+0.020 / +0.041	42	+0.009 / +0.025	20, 25, 30, 35, 40, 50, 60	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	32	+0.025 / +0.050	40	+0.009 / +0.025	20, 30, 32, 40, 50	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	32	+0.025 / +0.050	42	+0.009 / +0.025	20, 25, 30, 40	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	32	+0.025 / +0.050	45	+0.009 / +0.025	30, 40	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	35	+0.025 / +0.050	44	+0.009 / +0.025	16, 20, 25, 30, 35, 40, 50, 60, 70, 80	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	35	+0.025 / +0.050	45	+0.009 / +0.025	15, 20, 25, 35, 40, 45, 50, 55, 60, 70	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	35	+0.025 / +0.050	48	+0.009 / +0.025	30, 35, 40, 50, 60	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	38	+0.025 / +0.050	48	+0.009 / +0.025	30, 40	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	40	+0.025 / +0.050	48	+0.009 / +0.025	20, 30, 40, 50	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	40	+0.025 / +0.050	50	+0.009 / +0.025	15, 20, 25, 30, 35, 40, 45, 50, 60, 70, 80, 90, 100	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	40	+0.025 / +0.050	52	+0.011 / +0.031	30, 40, 50, 60, 70	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	40	+0.025 / +0.050	55	+0.011 / +0.031	15, 20, 25, 30, 35, 40, 50, 55, 60	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	40	+0.025 / +0.050	60	+0.011 / +0.031	30, 40, 50, 60	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	45	+0.025 / +0.050	55	+0.011 / +0.031	20, 25, 30, 35, 40, 45, 50, 60, 70, 80, 90, 100	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	45	+0.025 / +0.050	56	+0.011 / +0.031	30, 35, 40, 50, 60	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	45	+0.025 / +0.050	60	+0.011 / +0.031	30, 35, 40, 50, 60, 70, 80	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	50	+0.025 / +0.050	58	+0.011 / +0.031	40, 50	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	50	+0.025 / +0.050	60	+0.011 / +0.031	20, 25, 30, 35, 40, 45, 50, 60, 70, 80, 90, 100	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	50	+0.025 / +0.050	62	+0.011 / +0.031	25, 30, 35, 40, 45, 50, 60, 70, 80, 90	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	50	+0.025 / +0.050	65	+0.011 / +0.031	30, 40, 50, 60, 70, 80, 90, 100	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	50	+0.025 / +0.050	70	+0.011 / +0.031	40, 50, 60	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	55	+0.030 / +0.060	65	+0.011 / +0.031	30, 35, 40, 50, 60, 70, 80	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	55	+0.030 / +0.060	70	+0.011 / +0.031	30, 35, 40, 50, 60, 70, 80	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	60	+0.030 / +0.060	70	+0.011 / +0.031	30, 35, 40, 50, 60, 70, 80, 90, 100	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	60	+0.030 / +0.060	74	+0.011 / +0.031	30, 35, 40, 50, 60, 70, 80	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	60	+0.030 / +0.060	75	+0.011 / +0.031	30, 35, 40, 45, 50, 55, 60, 70, 80, 90, 100, 120	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	60	+0.030 / +0.060	80	+0.011 / +0.031	30, 40, 50, 60, 70, 80, 90	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	63	+0.030 / +0.060	75	+0.011 / +0.031	60, 70, 80	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	65	+0.030 / +0.060	75	+0.011 / +0.031	30, 35, 40, 45, 50, 60	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	65	+0.030 / +0.060	80	+0.011 / +0.031	30, 40, 50, 60, 70, 80, 100	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	65	+0.030 / +0.060	85	+0.013 / +0.035	50, 60, 80	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	70	+0.030 / +0.060	80	+0.011 / +0.031	30, 40, 45, 50, 60, 70, 80, 100	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	70	+0.030 / +0.060	85	+0.013 / +0.035	30, 35, 40, 50, 60, 70, 80, 85, 100	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	70	+0.030 / +0.060	90	+0.013 / +0.035	40, 50, 60, 70, 80	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	75	+0.030 / +0.060	85	+0.013 / +0.035	40, 50, 60, 70, 80, 90	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	75	+0.030 / +0.060	90	+0.013 / +0.035	40, 50, 60, 70, 80, 100	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	75	+0.030 / +0.060	95	+0.013 / +0.035	40, 60, 70, 80, 100	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	80	+0.030 / +0.060	90	+0.013 / +0.035	30, 40, 50, 60, 70, 80, 90, 100	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	80	+0.030 / +0.060	95	+0.013 / +0.035	40, 50, 60, 70, 80, 90, 100, 120	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	80	+0.030 / +0.060	96	+0.013 / +0.035	40, 50, 60, 70, 80, 90, 100, 120	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	80	+0.030 / +0.060	100	+0.013 / +0.035	40, 50, 60, 70, 80, 90, 100, 120, 140	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	85	+0.036 / +0.071	95	+0.013 / +0.035	50, 60, 100	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	85	+0.036 / +0.071	100	+0.013 / +0.035	40, 50, 60, 80, 90	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	85	+0.036 / +0.071	105	+0.013 / +0.035	40, 70, 80, 100	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	90	+0.036 / +0.071	100	+0.013 / +0.035	30, 40, 50, 80	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	90	+0.036 / +0.071	105	+0.013 / +0.035	50, 80, 90, 100	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	90	+0.036 / +0.071	110	+0.013 / +0.035	40, 50, 60, 70, 80, 90, 100, 110, 120, 140	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	90	+0.036 / +0.071	115	+0.013 / +0.035	80, 100	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	100	+0.036 / +0.071	110	+0.013 / +0.035	40, 50, 80, 100, 120	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	100	+0.036 / +0.071	115	+0.013 / +0.035	40, 60, 70, 80, 100	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	100	+0.036 / +0.071	120	+0.013 / +0.035	40, 50, 60, 70, 80, 100, 110, 120, 140	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	100	+0.036 / +0.071	125	+0.015 / +0.040	80, 100, 120	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	110	+0.036 / +0.071	130	+0.015 / +0.040	50, 70, 80, 100, 120	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	120	+0.036 / +0.071	140	+0.015 / +0.040	50, 60, 70, 80, 90, 100, 120, 140	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	125	+0.043 / +0.083	145	+0.015 / +0.040	70, 80, 100, 120	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	130	+0.043 / +0.083	150	+0.015 / +0.040	80, 100, 120, 130	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	140	+0.043 / +0.083	160	+0.015 / +0.040	50, 80, 100, 120, 140	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	150	+0.043 / +0.083	170	+0.015 / +0.040	80, 100, 150	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	160	+0.043 / +0.083	180	+0.015 / +0.040	80, 100, 150	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	170	+0.043 / +0.083	190	+0.017 / +0.046	100, 150	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	180	+0.043 / +0.083	200	+0.017 / +0.046	100, 150	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	190	+0.050 / +0.096	210	+0.017 / +0.046	100, 150	-0.1 to -0.3
High-Strength Brass Graphite Plugged Oil-Free Bushings – Cylindrical Type	200	+0.050 / +0.096	230	+0.017 / +0.046	150, 200	-0.1 to -0.3

Self Lubricating Bearing Application

Self-lubricating bearings and oil-free bushings offer oil-free, low-maintenance performance for high-load, shock-load, oscillating, and harsh-environment applications across a wide range of industries.

Industrial Machinery

CNC machining centers
Injection molding machines
Press machines / stamping presses
Hydraulic presses
Conveyor systems

Agricultural Machinery

Tractor drivetrains
Combine harvesters
Seeders
Sprayers
Feed conveyors

Automotive & Transportation

Engine sliding components
Transmission shafts
Steering system bushings
Suspension sliders
EV drive motors

Construction Machinery

Excavator boom/arm pivot bushings
Bulldozer hinge bushings
Concrete pump systems
Tower crane linear guides
Loader hinge/steering shafts

Food & Beverage Processing

Conveyor belts
Mixers
Filling machines
Packaging machines
Cutting / grinding equipment

Marine & Offshore

Ship rudder systems
Marine pumps
Deck winches
Propeller shaft bushings
Pulley guide bearings

Wind Energy

Wind turbine main shaft
Yaw system bearings
Blade pitch adjustment mechanisms
Gearbox sliding bearings
Eccentric wheel / transmission shaft bearings

Why Choose BKZ Industry?

BKZ Industry combines reliable manufacturing, broad product options, strict quality control, and patented technology to deliver self-lubricating bearings and oil-free bushings for demanding industrial applications.

15+ Years in Bearings, 7+ Years in Self-Lubricating Bearings

With over 15 years of bearing manufacturing experience and 7+ years dedicated to self-lubricating bearings, BKZ Industry offers specialized production capability supported by a dedicated factory and an experienced team.

Wide Product Range for Diverse Applications

BKZ Industry supplies graphite bronze bushings, composite bushings, flanged bushings, thrust washers, sliding blocks, mold guide bushings, bimetal bearings, and other self-lubricating bearing products for different industrial applications.

Flexible Materials and Custom Solutions

We offer multiple material and structure options, including graphite-plugged brass, tin bronze, aluminum bronze, cast iron, bearing steel, steel-backed bronze, composite materials, wrapped bronze bushings, and bimetal bearings for different working conditions.

21-Step Quality Control

From raw material selection to finished product inspection, every product goes through 21 quality control steps to help ensure stable quality, dimensional accuracy, and reliable performance.

Patented Technology and Strong Development Capability

BKZ Industry holds multiple patents related to self-lubricating bearing production, including graphite bushing machining, solid lubricant embedding, thin-wall graphite bronze bushings, and bearing processing systems.

About BKZ Industry Self Lubricating Bearing Factory

BKZ Industry provides factory-direct self-lubricating bearing solutions for OEMs, distributors, and industrial equipment manufacturers. With stable production, technical selection support, and custom manufacturing capability, we help customers reduce sourcing risk and choose suitable bearing solutions for long-term equipment operation.

FAQS About BKZ Industry Self Lubricating Bearing

Q1. What Does Self-lubricating Mean?

Self-lubricating means the bearing does not require continuous external lubrication because it contains built-in lubricating materials, such as graphite, PTFE, or other solid lubricant compounds. These materials help reduce friction and support smoother movement during operation.

Q2. How Do Self Lubricating Bearings Work

Self-lubricating bearings are designed with built-in lubricating materials, such as graphite, PTFE, or other solid lubricant compounds. During movement, operating pressure and friction help release or transfer these lubricating materials onto the contact surface, forming a thin lubricating film between the bearing and the mating surface. This film helps reduce friction, minimize wear, and allows the bearing to operate with little or no external lubrication.

Q3. What Are Self Lubricating Bearing Materials Used?

BKZ Industry manufactures self-lubricating bearings using a wide range of material options, including high-strength brass, copper alloys, cast bronze, tin bronze, phosphor bronze, leaded tin bronze, aluminum bronze, CuSn8P bronze, gray cast iron, high-strength cast iron, bearing steel, carbon steel, low-carbon steel, medium-carbon steel, stainless steel, graphite, solid lubricants, molybdenum disulfide, PTFE, modified PTFE, POM, modified POM, acetal resin, modified PEEK, modified PA46, nylon, porous bronze, sintered bronze powder, steel backing, bronze backing, stainless steel backing, tin plating, copper plating, hard chrome plating, PTFE resin seals, NBR rubber, spring steel, steel balls, aramid fiber, polyimide, lead bronze, and polymer wear-resistant layers.

Specific material examples include ZCuZn25Al6Fe3Mn3 brass, special cast bronze, CuSn8Zn3 bronze powder, CuSn6.5P0.1 bronze backing, CAC304 copper alloy, FC250 cast iron, S45C carbon steel, SS400 carbon steel, SPCC cold-rolled steel, DC01 steel, SUS304 stainless steel, 304 stainless steel, and 316 stainless steel.

The final material selection depends on load, speed, temperature, motion type, lubrication condition, corrosion resistance, and the required service life. Just contact us for more details.

Q4. Are Self-lubricating Bearings and Oil-free Bushings the Same?

No. They are not exactly the same, but they are closely related. Self-lubricating bearing is the broader category, while oil-free bushing usually refers to a sleeve-type self-lubricating bearing.
In other words, oil-free bushings are one common type of self-lubricating bearing, but self-lubricating bearings can also include flanged bushings, thrust washers, sliding plates, wear plates, spherical plain bearings, and other sliding bearing components.

Q5. What are Advantages of Self-lubricating Bearings?

Self-lubricating bearings reduce maintenance cost, minimize downtime, and support high loads. Bronze and bimetal structures improve strength, while sliding layers and solid lubricants improve wear resistance, low friction, and shock load performance in demanding applications.

Q6. How to Select Self-Lubricating Bearings?

Selection should consider load, speed, PV value, temperature, shaft hardness, surface finish, lubrication condition, motion type, and installation clearance. For quotation, please provide shaft size, housing bore, bearing width, load, speed, environment, drawing, or sample.

More FAQs >>

Other Bearings from BKZ Industry

In addition to self-lubricating bearings, BKZ Industry also offers a wide range of other bearing solutions, including slewing bearings, stainless steel bearings, ceramic bearings, high-temperature bearings, cross/universal joint bearings, toroidal roller bearings, solid lubricant bearings, thin section bearings, split bearings, and cross roller bearings.