Frequently Asked Questions

ROCOL offers a complete riveting range: lithium battery rivet tools (RL-520, RL-T1S, RL-X1, RL-TD1, RL-HD6/20/40/50/80, RL-HB6, RL-HY6, RL-HK6), lithium battery rivet nut tools (RL-860, RL-T2S, RL-X2, RL-TM2), pneumatic rivet tools (RL-4000, RL-4100, RL-4200, RL-4300M, RL-4400M), pneumatic rivet nut tools (RL-5308, RL-6312, RL-0312, RL-5312), and automatic feeding riveting machines (VOICE1000A). Browse the full lineup on our Products page.

Use a rivet tool (blind rivet gun) when you need permanent fastening of sheets and panels with blind rivets. Use a rivet nut tool when you must create a threaded hole in thin sheet metal using rivet nuts (nutserts). If your application needs a bolt to screw in later, choose a rivet nut tool; for standard blind riveting, choose a rivet tool.

Standard models (RL-520, RL-860) deliver reliable performance for general production. Intelligent models (RL-T1S, RL-T2S, RL-X1, RL-X2) add a TFT display, leak-proof riveting, error-proof riveting, riveting counting, and force/stroke adjustment. RL-X1 and RL-X2 also support data storage/transmission and MES/OP/MODBUS integration for traceability.

ROCOL's solar-specific lithium rivet tool series is built for PV bracket installation: RL-HD6 (M6 aluminum ring-groove rivets, 26mm stroke, 10000N), RL-HD20 (18V/2.0Ah, 20KN, 1.9kg, ideal for standard rivets), RL-HD40 (18V/4.0Ah, 40KN, multi-head, Φ6–18mm), RL-HD50 (36V/4.0Ah, 60KN, for 8/10mm BOM rivets), and RL-HD80 (36V/4.0Ah, 80KN, for 12mm BOM rivets).

Three key advantages: (1) Freedom — no air hose, fully cordless operation on rooftops; (2) Efficiency — strong lithium power completes high-quality riveting fast, cutting per-rivet time and boosting solo productivity; (3) Completeness — the four models cover pull forces from 20KN to 80KN, matching every PV bracket connection need.

The RL-X2 lithium battery rivet nut tool is the ideal NEV choice: it handles M4–M10 rivet nuts at 28000N pull force, suited to battery packs, body-in-white, chassis, and lightweight structures. It features a TFT display, leak/error-proof riveting, and riveting counting, plus Wi-Fi data transmission and MES/OP/MODBUS connectivity for full quality traceability. Its brushless motor and lead-screw drive ensure stable performance on high-intensity lines.

RL-520: Φ2.4–6.4mm, 20000N. RL-T1S/RL-T1: Φ2.4–6.4mm, 20000N. RL-X1: Φ2.4–6.4mm, 30000N. RL-TD1: Φ4.8–8.0mm, 28000N (large structural rivets). RL-HD20: Φ2.4–6.4mm, 20KN. RL-HD40: Φ6–18mm, 40KN. RL-HD50: 8/10mm BOM, 60KN. RL-HD80: 12mm BOM, 80KN.

RL-860: M3–M10, 20000N. RL-T2S/RL-T2: M3–M12, 28000N. RL-X2: M4–M10, 28000N. RL-TM2: M3–M12, 28000N (for rivet stud).

They differ by working range and pull force: RL-4000S (Φ2.4–4.0mm iron, 4800–6700N), RL-4000M (Φ3.2–4.8mm iron, 8400–11700N), RL-4000L (Φ4.0–6.4mm iron, 10800–15100N), RL-4000H (Φ4.8–6.4mm stainless steel, 16900–23670N). Pick the model matching your rivet diameter and material.

The RL-4000V series (RL-4000SV, RL-4000MV, RL-4000LV, RL-4000HV) adds a self-priming (suction) nail function with a safety device that grabs the rivet automatically. The standard RL-4000 series has no self-priming — the operator loads the rivet manually.

The RL-6312 series covers M3–M12 with 8mm riveting stroke at 5–7 Bar. RL-6312L adds a long-travel design up to 14.5mm, ideal for lantern nuts and jack nuts. RL-6312B is a dedicated rivet-stud tool. The RL-5312 series offers similar ranges with a strong reverse-return function.

The VOICE1000A is an automatic feeding riveting machine with PLC intelligent control, a precision vibration bowl, and fiber-optic induction detection. It supports M3.2, M4.0 and M4.8 rivets at 60–120 pcs/min, and connects to automatic production lines via upper/lower computer communication signals.

RL-520 specs: riveting capacity Φ2.4–6.4mm; gun-body weight 1.57kg (excl. battery); 20V brushless DC motor; tool stroke 27mm; drawing force 20000N; lithium battery 18V/2.0Ah (0.38kg); charger input 100–240V/50–60Hz, charge time ≤60 min. Full specs on the RL-520 product page.

Choose by workspace and rivet: Flat nozzle — larger plane, bigger cap, shorter rod. Convex nozzle — tight space but stricter rod-length requirement. Outside-locking nozzle — outside-locking rivets to prevent mandrel pull-out. Keep a 0.2–0.5mm gap between nozzle and rod. Aperture mapping: Φ2.4→Φ1.7, Φ3.2→Φ2.2, Φ4.0→Φ2.7, Φ4.8→Φ3.3, Φ6.4→Φ4.3/Φ4.5 (all +0.1mm).

The claw is a wear part — replace it when teeth are worn and can't break/pull the rivet in one stroke. To remove: take off the gun-head shell (4), hold the claw-sleeve pull-head (10) with a wrench, unscrew the claw sleeve (5), and take out the claw piece (2). To install: seat the new/cleaned claw (2) into sleeve (5), hold pull-head (10), tighten sleeve (5), and refit shell (4).

Remove the lithium battery (85) and gun-head housing (4) to clear the fault, then reinstall the battery (85), press the switch plate (24) to reset the tool to normal. Low-voltage protection: if the battery is empty/low, the tool forces off and the red indicator (88) flashes — charge or replace the battery.

Difficult to break rivet: worn claw (replace), low battery (charge/replace). Grasps but slips: worn/dirty claw (replace/clean+lube), failed top-tube spring (replace), wrong nozzle (use correct one). Stuck while pulling: dirty claw (clean+lube), loose claw tube/nozzle (tighten), rod plugs nozzle (replace nozzle / check sleeve wear), mandrel jams guide bar (replace bar + clean). No action: battery off/low (charge/replace) or exceeds tool capacity (use correct tool).

Charge/discharge at 0–40°C. For storage over 3 months, keep at 23±5°C and every 3 months do a full charge-discharge then recharge to 70%. Never expose charger/battery to water, snow or damp. If battery liquid spills, avoid contact; if touched, rinse with water and seek medical help immediately. (Same rules apply to all ROCOL lithium batteries.)

Insert the battery pack (85) into the gun body (32) — the battery lock (86) pops up to secure it. To remove, press lock (86) and pull out. Only use original ROCOL lithium batteries to protect the tool and warranty.

Remove the gun-head shell (4), drag the quick-release sleeve (8) back, unscrew the old pull rod (1), screw in the correct new pull rod, and reset sleeve (8). If it won't reset, rotate the pull rod less than 1/3 turn until it clicks. Standard: pull rod (1) and transmission rod (44) have no relative rotation.

With the pull rod (1) in the reset state, press the '−' or '+' button on the control panel — the LCD shows the current deformation setting. Adjust to the desired value for your nut and sheet thickness.

In Auto mode (indicator flashes), after the nut auto-screws in, the tool waits 0.5s then pulls to the set value with no switch press. In Manual mode (indicator steady), after auto-screw-in you must press the switch (24) to rivet.

With the pull rod (1) reset, press '−' and '+' together — the LCD shows 'LL' and child-lock engages; '−'/'+' can't be changed while locked. Press both again to release.

Screw the rivet nut onto pull rod (1) 1–2 threads, press gently so it auto-spins in and stops, place into the workpiece hole against the surface, then press the power switch (24). The rod auto-returns to set position, spins out and resets — one cycle done.

RL-X1 transmits riveting data and force curves to a dedicated controller over Wi-Fi in real time; the controller links to the factory MES, OP, MODBUS and other systems via hardware ports. One controller manages 1–4 tools simultaneously for full quality traceability.

Three common causes: wrong stroke setting (re-adjust stroke), workpiece thickness mismatch (check nut and plate thickness), or low battery voltage (charge/replace). Re-check the deformation value for your nut size.

Causes: nut embedded improperly (use correct nut), wrong pull-rod installation (fit correct rod), old/damaged rod (replace), or wrong gun-head assembly (re-seat). Verify the rod size matches the nut (e.g., M6 rod with M6 nut).

Usually a defective nut (replace rivet nuts) or an incorrect/damaged pull rod (replace). Set stroke to 0, hold the switch, and replace the nut or rod as needed.

Two causes: stroke set too high (re-set stroke) or single-side force on the rod (keep the tool parallel to the nut). Always align the tool squarely with the workpiece.

Causes: battery empty or under-voltage (charge/replace), or riveting capacity beyond the tool's range (select the correct model). Confirm the tool matches your rivet/nut size.

Remove the lithium battery (85) and gun-head shell (4) to clear the fault point, then reinstall the battery (85), press the switch (24), and reset the tool to normal.

Yes. The pull rod is a wear part — clean or replace it when dirty or worn. The rod size must match the rivet nut (e.g., M6 rod with M6 nut). Keep spares on hand for continuous production.

RL-4000M handles Φ2.4–6.4mm rivets at 9230N pull force, 18mm stroke, Φ20.5mm barrel diameter, operating at 5–6.5 kg/cm² air pressure.

Daily: clean the tool and remove oil, debris and metal dust. The oil circuit should be serviced by a service center. Replace worn parts with original spares only. If the handle is broken, replace it immediately to avoid injury.

Causes/fixes: low air pressure (adjust), worn/damaged jaws (replace), low oil or air bubbles in oil (top up hydraulic oil), damaged small piston (replace), failed top-tube spring (replace), misaligned nozzle (realign), debris in sleeve (clean), mandrel stuck in guide rod (remove). Keep the air supply clean and lubricated.

Maximum working pressure must not exceed 7 bar; the recommended operating pressure is 5–6.5 kg/cm². Over-pressure shortens tool life and risks component failure.

RL-0312 handles M3–M12 rivet nuts in aluminum, copper, iron and stainless steel. Riveting stroke 7mm, motor speed 3500rpm, pull force ≥19.1KN (4300 lbf), noise <75dB, weight 2.47kg, air pressure 5–7 bar (rated 5.5 bar).

Loosen the bridge washer (95) and pull out the positioning pin (88). For thin sheets (longer stroke), turn the rear cover (86) counter-clockwise; for thicker sheets (shorter stroke), turn clockwise — no more than 5 turns counter-clockwise from the thread top. Lock the pin (88) once riveting is optimal.

1) Disconnect the air supply. 2) Hold head housing (91B) with a 23mm wrench, loosen lock nut (94B) with a 22mm wrench, remove head (93B) then housing (91B). 3) Pinch spring pin (124) to retract, unscrew pull rod (100B) counter-clockwise, screw the new rod clockwise into shaft (44B) until tight, release pin and rotate rod until locating pin (117) locks it. 4) Refit housing, install the matching head, set exposed rod length per nut, and tighten lock nut (94B).

1) Lay the tool flat with oil-seal screw (42) up. 2) Push stroke pin (88) and loosen rear cover (86), up to 5 turns from inner position. 3) Loosen oil-seal screw (42) and washer (43) with an Allen key. 4) Slowly pour in hydraulic oil, letting bubbles escape. 5) Tighten washer (43) and screw (42). 6) Ensure screw (42) is fully tightened.

Motor slow: internal leak, low pressure, blocked passage, damaged screw or vane (repair). Nut under-deformed: adjust stroke/pressure, add oil, check thickness. Rod spins continuously: reset distributor, tighten shaft (44B), replace ball spring (79). Nut won't auto-screw: correct nut, replace rod, refit head, set lock-nut gap (45)/(46) to 1.5–2mm. Rod stuck: set 0 stroke, hold switch, replace nut/rod. Rod breaks: reset stroke, keep tool parallel. No stroke: tighten shaft (44B) and lock screw (45), connect air, add oil, re-adjust. Trigger fails: hold trigger, adjust pressure, add lube, clean, replace seals (60/31/30).

Daily: clean the gripper and paw, and remove aluminum/iron dust from the top tube. Regularly: inspect the pull rod for dirt or wear and clean or replace it promptly. Keep the charger/battery within temperature-controlled protection and use 1-hour fast charging. A clean tool lasts longer and rivets more consistently.

Charge/discharge at 0–40°C. For storage over 3 months, keep at 23±5°C and every 3 months do a full charge-discharge then recharge to 70%. Never expose to water, snow or damp, and if battery liquid spills avoid contact — rinse with water and seek medical help if touched. (Applies to all ROCOL lithium batteries, including RL-520, RL-860, RL-T2, RL-X2.)

MOQ varies by model. Standard tools can be ordered from single units; OEM/ODM custom orders typically start from 50-100 units. Contact us for a specific quote.

In-stock standard tools ship within 3-7 days. Customized or high-volume orders typically take 15-30 days depending on specification.

Yes. We support OEM/ODM with your logo, color and packaging, as well as custom tool configurations for specific rivets and materials.

ROCOL products hold CE certification and SGS-tested reports, with multiple national patents. Certificates are available for procurement review.

We support EXW, FOB, CIF and DAP terms. For DAP, we handle transport to your named destination; import duties and local clearance are arranged by the buyer.

Standard warranty is 12 months from delivery. Wear parts (nozzles, mandrels, batteries) are covered separately. Please keep your order documents for claims.

Yes, samples can be arranged for evaluation. Sample cost and shipping are typically covered by the buyer, refundable on your first bulk order.